Fighting to free the world and struggling to free yourself are not independent; you need to do one in order to do the other.
Buried somewhere out there in the world is the belief that people who are working to make the world a better place are somehow being ultimately selfless, acting only in the interest of others and living comfortably in the guise of righteousness. In the meantime, there are people who are entrenched in the belief that the only thing they need to worry about in the world is their self.
This argument is false from either perspective. You cannot save yourself without becoming tied up in the plight of making the world a better place; freeing yourself frees others, too. Some people who believe that they can only help themselves also believe they have nothing to give to others, or that they can’t do for others what others should be doing for themselves. None of that is wrong – but it’s not fully right, either.
Being fully consumed with others’ well-being is said to be a fool’s game too, if only because anytime we interact with another person we inherently change them; there are no objective interactions, just like Schrödinger’s cat taught us.
So accept that you have a place in the world. That place is to help others and to help yourself. Neither is in opposition to the other.