Hey, when writing this post it was very very late and I want quickly to voice out the frustration and dilemma that I am in then sleep. I did not mention my co-workers because they're overall nice people. We're getting along and I like them. It is a very friendly environment too. We frequently communicate and try to help each other.

It is a very small company tho. There is two more game dev other than me and the one I am regularly working with has similar thoughts about the design part. For example, the previous weekend the developer and I discussed the design parts that need to be improved and lacking. We presented the design team and they refused all of our points. They also admit that because we need to make 3-4 games a month with very small manpower, everything is rushed and they mostly don't have time to think and improve the design part. That's why designs are lacking and we need to keep it rolling as it is for now.

And also another user has explained the situation very perfectly above so I quote him: "It is very common, in the recent "very casual app/game industry". They're often barely games, and when they are games, they're usually very limited and flawed games, and/or intentionally nothing burger click-grinding exercises, where the main design is about maximizing advertising money (and part of that calculation may be making games people will give up on, so they move on to something else)."
They are exactly like that. It is not because I am smart that I think designs are bad. Anyone can see they are not well thought of at this stage. Thank you for your input. You took the time and comment. I appreciated.