If Antony isn't playing its generally Bruno who will be playing there, and he hasn't played there much but also may have instructions to come inside. If we played a direct replacement e.g. pellistri I wouldn't expect them to find it hard to position themselves out wide. In fact I would suggest he would be better at stretching play because he could go down the outside and use his right foot
It’s clear we need a lot more from Antony than what he has produced so far. But my point is he’s bringing more to the team than some people are willing to give him credit for. A lot of which involves the space he creates for others.
Whether we like to admit it or not, he is our best option on the right wing at the moment. He is our only left footed option. There is a reason why every top team plays inverted wingers. Playing Pellistri, Sancho, Elanga or Garnacho on the right wing is not the solution. Antony needs to do a lot more than he is doing but the other options you are suggesting are not the solution to the problem.
Go down the premier league top teams and name me one winger who plays on the wing which is the same side as his foot. Saka, Martinelli, Mahrez, Grealish, Salah, Diaz, Gakpo, Kulusevski, Son, Rashford, Antony, Mudryk, Ziyech. They all play on the opposite side to their strongest foot. Foden is the only one who’ll play on the same side but rarely stays out on the wing.
There is a reason why Sancho, Pellestri and Rashford aren’t the solution for right wing. The only alternative that I have hope will give us a viable option is Diallo if he continues to develop. It has to be a left footer for the way we want to play.