How can we decrease the size of the edge i try, but nothing

How can I fo that

Yes more better to be narrow or small in size.itry several times but didn't find any settings for that

The only thing you can adjust is the handle size, wichi is that thing you swipe for the panel to show, as far as i know you cannot make it slimmer, mine has 2 icons per row and there's no way to control that.

If you want, probably having less icons would only help you in the hight issue, try disabling the AI select and other option, mine is super stacked :)