I used to use RDP from Android to my Windows 10 pc constantly. Since switching to Debian, I haven’t gotten around to getting that working again. (Debians out of the box RDP solution gives me a black screen on the remote device)
Instead I’ve been using ssh a ton with JuiceSSH for a terminal. X-Plore for GUI managing files between local(android), ssh, gdrive, dropbox, and many more locations all in two tabs you can swap between and copy/paste/move files as if it’s all one big file system.
Finally I use Folder Sync to keep all of the userdata files on my phone backed up to a folder on my server via SSH. Images are synced immediately on creation, and everything else is backed up on a schedule.
(my phone’s always connected to a private VPN keeping it within my LAN and able to reach things like my SSH server, without exposing them to WAN)
The only thing I really miss having RDP for is the occasional website that refuses to play with a mobile browser. Hotmail/Outlook (I know, I should really change to someone not trash for email) for example will not let you edit inbox rules via a mobile browser or their mobile app. (even with ‘request desktop site’ enabled). You have to use an actual desktop browser for that. :(
Otherwise I do pretty much everything from mobile.