Flamma FS21 Looper/Drum Machine

It's OK but it's hard to use. I'm a technical guy and I thought this will not be a problem.
It's ok to use as a looper but once you engage the drum machine everything can go bad quickly. I mean in the sense the drums can alter the speed of your loop because you pressed the wrong button at the wrong time. And once that happens you can't go back.
You can save your loops with drums but even once it's saved it could happen that you accidentally change the drum sound and before you know it you save the new loop and you loose your recording.
The drums are ok but nothing special. The metronome is not 100% what I want - I think the problem is you can't get the click to be all the same - it always accents the 4th click or something like that.