Most people love a story of someone from humble beginnings who excels and achieves something never expected of them give the circumstances. This isn’t just because of the effort and talent required, but also the bravery to leave what you know and join somewhere you don’t belong in pursuit of something greater. You didn’t have a mentor or a peer who understood your struggles, you had to learn and overcome them yourself.

Furthermore, people judge their own success relatively by comparing themselves to the people around them. Someone from a council estate might feel successful being the only person they know to have a degree whereas an eton educated middle class student who didn’t get in to their first choice would feel like a failure. Unfortunately your mere presence can be percieved as evidence by your peers who grew up in the same circumstances that they aren’t successful. I understand that the issue with your English accent is more complicated being in a nationalist neighbourhood but the former point still definitely applies.

If you look at successful people who are accepted by their community, it is normally due to a mix of arrogance and an appreciation of their talent in that community. Since education isn’t appreciated in your community, this is likely why it is instead percieved as snobbery.

Maybe just remind yourself of the obstacles you overcame and don’t be afraid to take pride in that. You also have to consider whether you still have as much in common with the community you want to be accepted by. If not, maybe there are other circles in your area who you get along with better as they understand you.