You just tell your friends that you are not reachable on Facebook anymore and how you can be reached.
You don’t have to "convince" anyone.
Your real fear is that people will stop reaching you if they don’t want to install another app, send you an SMS, send you an email or to call you on the phone.
Well, if your friends stops reaching you because you uninstalled an app, honestly it looks that they are more acquaintances than real friends. And it’s ok. But it’s also ok if they are just an entry in your contacts list.
You’re making an awful lot of assumptions about how people think and behave en masse. When facebook is the primary communication factor for huge family groups, if you’re the only one not participating then you miss out on all those conversations. It’s not just about one on one communication, it’s about a virtual family presence.
I say this as someone who despises facebook but this is the reality we are in. Similarly, in most nations outside United States, you really cannot get rid of WhatsApp. If you don’t use WhatsApp, you are missing out on how much of your society operates.
It's not about being reachable in a 1-1 chat. It's about being excluded from group chats which are very important for keeping up the group and friendship in general. For example, if I deleted FB Messenger right now I would still get invited to the occasional event but there would be way fewer "yo, I'm at X, is anyone free to hang out?" type messages that I will see, or invitations from acquaintances in big group chats, or the current shitpost of the week that will become part of everyone's lexicon for the next 2 months other than yours, etc. For a lot of people (including me) such communication is a majority of their overall communication with their friends and breaking them does break a big part of their life.
You just tell your friends that you are not reachable on Facebook anymore and how you can be reached.
You don’t have to "convince" anyone.
Your real fear is that people will stop reaching you if they don’t want to install another app, send you an SMS, send you an email or to call you on the phone.
Well, if your friends stops reaching you because you uninstalled an app, honestly it looks that they are more acquaintances than real friends. And it’s ok. But it’s also ok if they are just an entry in your contacts list.