You seem to be not comfortable with cli tools and Handbrake was already mentioned so next you could try Movavi Video Converter but I recommend v21.3.0 you can get it from lrepacks (trustworthy) because it is better in features than their latest version.
Same here, got xmanager and Youtube music RVX but still I usually just listen to my ogg, opus, flac or wav music using Aimp cause it’s most reliable that way. Music is ripped using zotify or yt-dlp on pc though.