>> 1. I don't want to use Google Android or Apple iOS. There is no first class client for Linux/#Debian/#Mobian.
Build one.
>> 2. I don't want to fuel the Amazon cloud of Jeff B., but prefer services in my home "country", the #EU.
Use #OpenStack or ask an EU provider to use it.
>> 3. I don't want to use a phone number for creating an account. E.g. it makes multi-account setups hard.
>> …grey beard, but I'll stay with #Jabber 
How about #Mastodon? 