Need suggestions for bicycles under 30k

I am looking for a good bicycles under 30k, either MTB or hybrid. I have searched a lot but have not got any solid feedback and I don't want to rely solely on what shop owners say. I was looking for Firefox but people said quality is not good. I even considered decathlon cycles but did not find any solid reason why I should prefer decathlon over others. My requirements are good breaks, comfortable ride and good gears because in my both previous bicycles I have faced issues with gears after a few weeks of riding. Please give your suggestions, thanks.

Edit- getting veloce v200 for 25.5k. Should I take it?