I can't make out the branding on your existing hinges, so can't be really specific, but sometimes the soft close spring/damper just breaks on these hinges.
The thing to do is source replacements, which isn't (unfortunately) as easy as it sounds, as there's a staggering variety in these hinges.
Best case is that you can find a real brick and mortar cabinet ...
I did a house a few years ago that I replace 24 doors total (including sliding doubles for closets in 5 bedrooms). So 14 doors that I had to chisel out hinge sets.
So here is what you need to think about:
Can I get doors in the correct width? Cutting a half inch out on the hinge side will be fine. Once you get more than that there are issues (tell you ...
I'm really not sure what kind of answer you expect.
This project is wholeheartedly based on your skill level.
This guy installs a slab door in about 10 minutes.
If you have all the tools available then theoretically you can do all the doors in less than one day.
Probably struck with paint and/or a very tight fit.
Would place screwdriver or similar object in a hole and wedge underneath, and tap screwdriver lightly with hammer a couple of times.
Turn screwdriver in another direction(N,S,E,W) and repeat. Light taps should loosen it after a few times.