Help with the swipe up function- ipad air 4th gen

I’m having trouble with the swipe up function (that replaces the home button) on iPad Air 4th gen. Every time I try to use the swipe up function it takes at least 3, but more like 5-7 tries to get it to work. It's frustrating for normal use, but especially frustrating to me because I often use an art app and all those extra swipes draw lines on my work and I have to undo them all, then zoom way out so the working field is far away from that tricky bottom bar and try again (otherwise I'll have to open it back up and fix the erroneous lines by hand because the undo button doesn't work after minimizing the app >:( ). Also whenever I do it on a screen with the keyboard, it types a bunch of letters I didn’t intend. Arg! I really wish there was a dang home button but since that isn't really an option, I hope you all have some technical advice for using it more easily. Maybe settings can be adjusted that I don’t know about or something?

If not, I’ll want to actually contact apple support and ask them to strongly consider making a software update to the iPad Air (4th gen) to improve the ease with which the swipe up function works. Can anyone tell me the most efficient/effective way for submitting this kind of feedback to apple?