>Your feedback is so constructive, THANK YOU Man

I'm glad you take criticism so well :)

> I am not an UX designer to, so maybe this is the reason of bad UX and UI.

UX design is a bit like programing: if you just do stuff and never test it it's unlikely to work. The single most valuable thing you can do for UX is to grab somebody from your target group and let them use your program. If you don't explain and don't comment, you can watch how they will struggle with things you thought would be obvious. Then just change those parts and test with someone fresh until it really is obvious to someone not intimately familiar with the inner workings of the software.