I started with Plex, but I would say it wasn't until I spun up Nextcloud and got it running that I really would say my life changed. My entire family now has Nextcloud accounts, a family calendar, instant upload of pictures from my phone, all my recipes, and I even have OnlyOffice document server running for editing documents in Nextcloud.
Every time I end up with a finicky bluetooth pairing process, I turn off bluetooth on all devices other than the one I'm trying to pair to. Usually fixes any problem.