How would you evaluate the impact of teenagers' use of Facebook when their parents joined Facebook? How would you improve accordingly?

For teenagers, their privacy is very important. Due to the level of exposure of the activity on Facebook, teenagers, when their parents started using the platform, decided to move to another social network where could select who could see their publications and who could not.
Facebook left to be the preferred platform by teenagers and started to be for adults.

My evaluation

Although teenagers have stopped using Facebook as much as they used to, more and more older people have started to use it, increasing the traffic on the platform. For this reason, I think it was a good thing that it happened.
The purpose of the platform was consolidated for the different activities of this type of user, and it found its place in the market needs and with it increased traffic and created many new uses for the platform.

In relation to the original question and taking into account the impact of teenagers' usage, I will propose an improvement in Facebook to recover the loss of its traffic from this segment of users.

Then the user segmentation will be by age

Teens and young adults (13-24 years old)
Young adults (25-34 years old)
Middle-aged adults (35-54 years old)
Older adults (55 years and older)

I'll focus on Teens and young adults. I think it will be very difficult to get teenagers to go back to using Facebook as they did in the beginning, but they may nevertheless decide to use it as a platform where they can get products and services because

They trust it as a platform where adults (their parents and acquaintances) are there and offer them in a reliable and safe way.
It is a place where their parents approve of their use.

then the pains and needs would be

The exposure level and privacy: they don't want the whole world to know about their activity and searches.
Look for products and services according to their interest. For example: buy a school book, clothing, fashion, technology, electronics, music, entertainment, travel experiences, education, tutoring, job opportunities, wellness, lifestyle, and others.
Scams and other threats on social networks.
Transparency and honesty in the usage of their data.

I choose the first two needs, I propose the following solutions

Improve the search functionality filtering by affinity taking into account the relationships and other navigation data.
Change the current Marketplace with another option of marketplace application less permissive and with more control over its activity.
Add a "youth" mode with more visual and ephemeral content, enhanced privacy and security, and relevant content, driven by transparency and accountability.
Create sub-applications of Facebook as a lite version of it focused only on one specific purpose. In this case to get goods and services.

Evaluation of solutionsSolutionImpactEffort

Improve the search functionality by affinity	Low This wouldn't be so different from the current functionality.	Low This could be done using current user data and the AI for this purpose.
Change the current Marketplace	Medium In this context, this change doesn't tackle the main problem. However, I think the current marketplace feature is bad for Facebook's reputation and trustworthiness.	High This is a big change and would imply the development of a new product.
Add a "youth" mode	Medium The solution is similar to the current sections that Facebook currently has like Home, Videos, Marketplace, Groups, or Games.	Medium This could be done by restructuring the current look and feel and filtering properly.
Create Facebook lite versions	High This solution directly addresses the main pain point in the user experience of teenagers.	Medium This could be done using the same catalog of elements that are already used for Facebook.

This way solutions are prioritized as following

Create Facebook "lite" versions.
Add a "youth" mode.
Improve the search functionality by affinity
Change the current Marketplace

Creating Facebook sub-applications as "lite" versions focused only on one specific purpose could be done for both web and mobile channels. The idea is that they have the same look and feel as the traditional Facebook mobile/web application and share the same content that currently exists on the platform but without off-target content and functionalities. They could be called for example

Facebook Students
Facebook Fashion
Facebook Tech
Facebook Music
e-Facebook (for entertainment)
Facebook Travel
Facebook Edu
Facebook Job

For my first MVP, I chose one of them based on data analytics over the current platform, selecting a particular region to take the first measures.

In this way, I could focus all current resources on each target purpose where the user could perform the desired activity by browsing and interacting with the subset of funtionalities available in each case without affecting the current activity that exists today on the platform. After all, I would not want to see the exodus of the current elderly users on the platform happen to us.

The metrics to measure the success could be the same that are used in the current platform but this time in each sub-application. For example

Reach: The number of unique individuals who see content, whether it's organic posts, ads, or pages.
Impressions: The total number of times content is displayed, including repeat views by the same person.
Engagements: The number of actions taken on content, such as Likes, Comments, Shares, Link Clicks, etc.
Click-Through Rate (CTR): The percentage of people who click on a link or ad relative to the total number of people who view it.
Dwell Time: The amount of time users spend interacting with content or browsing the platform.
Conversions: The number of desired actions completed by users, such as purchasing a product, registering for an event, or downloading an app.
User Retention: The number of users who return to the platform regularly over a specified period of time.
Customer Lifetime Value (CLV): The total value that a user brings to the platform over their lifetime as a customer, including revenue generated through purchases, ads, subscriptions, etc.