Discord might, according to the New York Times, have an initial public offering soon
In other words, external shareholders are going to be able to make decisions about the platform with the end goal of making money / return on investment.
I advise you migrate your DMs somewhere else, you probably don't want your important conversations stuck on a place which will likely become more and more hostile towards users
I do not have a solution for communities, although I wish I did.
My personal recommendation for personal chats, i.e small groups and DMs continues to be Signal, which probably suits many well
If you have other priorities that's fine, I personally do also use Matrix and XMPP.