Signal won’t be able to protect you from Chat Control.

Delta Chat can be self-hosted.

Briar uses much more battery than everything else I’ve tried (which includes SimpleX but not XMPP).

Florisboard. Android keyboard, doesn’t have spell checking yet but I’ve been using it for years, you might not need autocorrect as much as you think! (Note for Samsung users: Samsung Keyboard keeps adding items to its clipboard history whether it’s default or not. Clipboard history is also accessible through Edge Panels. Your passwords might end up and sit there for a long time… you can use adb to disable com.samsung.android.app.clipboardedge and com.samsung.clipboardsaveservice.)

Delta Chat, for messaging. Sign-up is extremely easy using the default server, and I’ve convinced some of my contacts to join.

I suggest mega.io as replacement for OneDrive. I use it myself, and it has a desktop app like OneDrive’s.