How to Limit Who Can Contact You on Facebook
Companies, agencies, institutions, etc
Profile
Facebook
Facebook Privacy Checkup
Google
Select Add to Blocked List
Condé Nast
Affiliate Partnerships
People
David NieldTo
Profile
David Nield)If
Facebook
Facebook Messenger
Edit
Starlink
Groups
️
Physical locations
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Places
Roe
California Privacy Rights.
Locations
Ukraine
Events
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Summary
If you click the Limit button underneath it, any older posts that were shared with an audience of friends of friends or indeed anyone on the web will be locked down so only your current Facebook friends can view them.Choose what happens with messages from people you don't know.Anyone you’re Facebook friends with can send you a direct message via Facebook Messenger, so if you don't want this to happen then you need to unfriend or block them. To sever a connection with someone, visit their profile page on Facebook and click Friends then Unfriend.For people who you absolutely do not want to hear from on Facebook, use the block feature.
As said here by Wired