Why not Sim Theme Park or Happy Feet?
Most people put WAY too much thought into what is going to be their first game, when it's better to just play any game and get in the mindset to practice it a ton.
How about this game? https://www.speedrun.com/super_novel_collector_speedrun_edition Length of the run is 15-30 minutes. I know this isn't exactly what you suggested, but if I remember correctly, you got a free key for this game (different forum). Community is currently really small and could use some help!
Rollercoaster Tycoon 2 (https://www.speedrun.com/rct2/individual_levels) has some good runs and an active overall community despite being pretty old. This is partly thanks to OpenRCT2 which adds quality of life changes, including adjustable hotkeys. I personally just play it casually.
you should try There is no game. pretty simple to run and it lenghts about 3-5min
hi TaruDuck, i advise you god of war ghost of sparta! :P There aren't enough people on this run!