Hi @MTZ , #selfhosting could be a move in the right direction for you. I started managing my own servers over 10 years ago, locally, from my home, later VPS and finally again from my home. Eventually I moved toward @yunohost - it simplifies a lot of things! I documented some my experiences at https://wasi.ovh/
Start small: setup file/photo sync (@nextcloud), calendars and contacts and gradually start adding data from old backups once you feel comfortable.
Have fun and good luck :)

@stefano@bsd.cafe I don't think it's only Samsung, it could be a deal with Google/Android, because in my tcl phone I also see three #meta services preinstalled
com.facebook.system
com.facebook.appmanager
com.facebook.services
I could remove those with Canta