Handguns, as others have said aren't a good idea.
But some people like challenges so here's a list of things you can try:
- r17 (looks great but still in "beta" although looks almost complete, not an easy build but looks reliable)
- null 22 (or not-a-glock, which looks less reliable)
- el ratto
- beach pigeon
- beagle
- make a 22lr 19911 with a mix of these files: https://guncadindex.com/detail/ok-boomer-1911:b https://guncadindex.com/detail/FossWerks_3D11_Beta:0 https://guncadindex.com/detail/1911-22LR-MAG:0 https://guncadindex.com/detail/22-1911-verson-1.2:8 (needs work)
- yeet22h (+ compact version)
Easier first builds (PCCs mostly)
- decker 380
- urutau
- fgc9
- rogue 9
- rebel 9
- FGCz9
- hd22c and plastic blaster's other builds
- kaewon's builds
- Cease and Desist
Harder:
- mp22k
Edit: i forgot: HW4 Mega Pistol !!
Few people have built the mp22k and those that have say it's a hard build.
Did you try to film the ejection in slow motion? I think you can get decent details with modern phones.