When playing Aurelion, I feel like I'm not allowed to do many things

First of all, I'm so far from mastering the champ or being a challenger myself. Whenever I've played Aurelion, the impression he has given to me is that his "must not do things" list is even longer than a mom's show to her children:

-I want to escape a difficult situation or engage a teamfight? I can't properly fly because in the moment I get hit I will stop flying and then let's wait a beautiful minute to dare to do it again.

-I wanna make some pressure in lane? I can't get my stars expanded for too long because in the moment I get hit they will be contracted.

-I wanna surprise my oponent laner from behind? Well, let's be lucky that my passive isn't noticed in the bushes. Like really? Even a 6 stacked Cho'Gath with Lulu's ult is invisible in bushes.

-I wanna fight that annoying Yasuo/Zed/every^other^^melee^^^champ? I have to be sure that I'm away from him, otherwise I won't hit the stun or damage him with the stars.

Meanwhile, every other champ is able to fight and hit spells on whoever they got in front. I just don't feel like I am rewarded at all from landing my skills succesfully on them with Aurelion. Yet I can have a good teamfight if my team is there with me, but that sneaky 200hp Katarina running through the river to save herself, will likely kill me if I try to finish her off.

I mean, of course every champion in the game has to has its counters and weaknesses, let's say Kata's ult, or Yorick's W for example, but hell! Aurelion's whole kit has a counter! (except for the ult I think..)

You can consider this a rant if you want to, but all I wanna do is to enjoy a beautiful champion. However its own kit doesn't seem to want me to enjoy him and I sincerely think that the champion should be accesible for every player in the world, that unfortunately isn't the case.