but the question is can i use martingale/anti strategies there?
You are gambling according to your choice so there's no such restrictions on whether you can use any strategy or not unless you are not violating any of the rules of the platform.It is also a strategy where you bet so why would they have any problem with it?
Maybe that question is to clear out his doubts to use dome strategies he read up used by other people and same as you said there's nothing wrong to use it or any other else as long as there's no exploiting or other abusive things they do on the casino. To many people use that and experimenting other strategy to use and they are fine so they should try it since somehow those strategy mentioned is really fun to use.