Do you have a domain? If you do, maybe try Nginx Proxy Manager and SFTPGo. I previously used File Browser but the developers made some fairly large breaking changes and I never went back. SFTPGo lets you add accounts easily and I have specific folder setup for sharing with friends. It has a clean interface too. If you don’t have a domain, maybe try Tailscale?

Sorry, no idea. Dumped Netflix years ago.

I tried Flex Launcher on RebornOS but couldn’t really get it to even launch stuff, besides the Plex app. Maybe I need to read the documentation better. I think it’s promising but has a steep learning curve. I don’t need it to hold my hand the entire setup but would like a little more help with configuration than it currently offers post install. My issues could also be due to Linux. I haven’t tried the Windows version.

This is basically what I do, except the quicker way without using ADB to remove anything. Might try removing the junk though to see if it makes a difference. Launcher Manager and Flauncher makes an Onn 4K very snappy. Hard to beat for $20 and a little setup effort. I used to use Firesticks for years, but they get so slow and constantly revert my launcher changes. Finally got rid of them all.