The main cloud services don’t even work natively (GoogleDrive, OneDrive, iCloud) basically the only mainstream choice is Dropbox. I tried to use Google Drive in Mint, and it’s a pain to get it to work, and usually it stops working after computer restarts.
Someone has a recommendation about how to handle these services?
The self-hosted bit is the problem. I have yet to find a Nextcloud provider that offers the service truly ready to go. The ones I found try to make it somewhat easy by offering Install buttons in web interfaces but if you have absolutely no clue about such things, even that is a hurdle to overcome.
Here is the official list of nextcloud providers that do the setup and maintenance for you: https://github.com/nextcloud/providers#providers