

I can second most of the suggestions. I do not host an office suite (for now?) but I am syncing my keepass dbs over syncthing along with my notes and important documents. I think since 2016 or so. It works well.
Before I had a server I just synced them in a triangle between my phone, laptop and desktop. Most things had 3 copies this way. Any device could offload changes to another. Now I have a central node and the option to sync as before if the server is down. With Tailscale, I don’t need to be on the same wifi now eiter.
The keepassDX limitations are not a big deal if all you need is basic autofill.
Mail providers are hard to chose. I am leaving proton for the lack of easy smtp and their locked in nature. Get your oen domain and you will be able to switch more easily in the future.
Yeah, I tried tuta. I have (overall less but) the same issue with proton. I just want to use my own client apps of choice.
I have registered with mailbox.org and while the trial period is very limited, the web ui is minimalistic and basic looking. You could say outdated. I seriously consider paying for a “team” account for me and my wife. The price is unbeatable. Aside from the gui, the features I need are there.
I just need the Wife’s approval. She’d be migrating from yahoo of all places.