I use MPV as movie and general media player with my custom config as well as auto-crop and URI copy/paste scripts. It works better than any other media player I tried in the last 10 years. I only use VLC for DVD menus, but it sucks even at that task, because the cursor gets stuck and the menus lag even when playing from SSD folder.
I use Tauon Music Box as music player because of its design, easy playlist/library customizability and Jellyfin integration. I also pay for spotify and use spicetify with custom skins if the songs are available there.
Kröhnkite as real auto-tiling solution with KDE Plasma.
But I'm on Arch btw., so there is not much default software apart from what the KDE meta packages contain.
Not helpful, there are already existing comparison platforms that use AI and (of course) have numerous false information on closer look.
Instead, I always use Geizhals.de for comparisons, it is by far the best website (even internationally) to filter and compare features plus real world prices of most tech-related items. No AI, just real facts from official data sheets, a database and good web programming. Also, completely without paid promotions or enything like that.
Unless you could top that site in reliability, ease of use and features with your AI website, I wouldn't use it.