I have gone back to using XMPP and have my family and friends using it. There has been a uptik in development of this protocol and the mobile apps have gotten way better. Facebook, whats app, google, and countless others all started with XMPP/jabber and they all could talk to each other. That is until they walled them off to try and force everyone on to there app. Its so dumb that we had a federated chat system that was taking hold until the big tech players got involed and sucked up the users then turned off federation. Chat could and still can be like email if there is critical mass on one of these federated protocols so everyone will start useing it.
My phone number is run though my XMPP server, no matter what phone or computer I use I can access my phone number. Hell I could drop my phone plan all together, if I wanted to and just use wifi for calls. 90% of the time im connected to wifi anyways. I use jmp.chat and the android app cheogram you should check it out.
I had the original pixel XL then switch to samsung s21 and now im on a pixel 7 and I can say with out doubt the the pixel 7 is way more responsive and feels so much faster then any samsung phone I have ever used. Samsung puts a lot of spyware bloatware crap on there phones. if you hook a samsung up to adb and have a look at the list of apps that are spying on you its insane, all the apps listed in the settings on the phone are not all the apps installed. lots of hidden apps running in the background. Something that would piss me off was every update installed a bunch of apps i never wanted and had removed previously. I have recently installed grapheneos and its amazing and seem less, I could install it on my moms phone and it would not be a problem. works just like any other android phone except google play is locked in a cage and can only do what you allow it to. I have google play services installed but basically took all its permissions away, so that the camera app and the few other apps that look for it are not bothering me about it. google play services never connects to the internet on my phone.
I will never go back to a samsung phone, I love the stock android experience its simple and no fluff.