I am wondering what the best strategy is to deal with an aggressive skilled bully player who is on your direct left and is seemingly targeting you specifically.
Let's assume there isn't another table open and there are no other seats available, so you can't just switch tables/seats.
You have 100BB+ and they have you covered and they are very often calling your preflop raises with a wide range. But they aren't necessarily a calling station postflop, instead they are looking to stack you, and tilt you. They may have even specifically moved seats to sit on your left.
How do you deal with such situations, given that you will almost always be out of position against them? Almost every hand you enter, they enter, and they are looking to exploit your TAG playstyle.
What do you do?
Some of the advice here is laughable. You are not going to outplay a solid LAG post-flop who's on your direct left, and waiting to flop monsters is what every other clueless TAG attempts.
It's for situations like these that GTO is designed for, since it helps you be unexploitable when OOP. Essentially, it means that you need to call down often enough with your "best" marginal hands so that he can't exploit you by simply betting you off hands.
If there is no other seat available, there is nothing wrong with taking frequent breaks until other seats open up or even simply leaving.