Fairness non-muslim

Hi guys, I know non-Muslims will go to hell if they don't convert to Islam right? so as human i feel like its unfair 4 them cuz they accept religion and their journey of life not same as muslim that born original as muslim. they don't understand it. there are many factors why they dont understand it @ cant accept religion. so from this situation i think God is unfair of this cuz why he didn't born us first as muslims and judge us after that if he wanna see our unity towards religion. cuz i see when there is people like non-muslims born without religion, i think it's not fair for you to be judged by things you yourself don't know. i know the benefit of we were created with different races, religions, skin colors is to know each other and yes i get and see this benefit but for afterlife n hell its just very unfair 4 them. sometimes i feel cuz we know the nature of Allah is just so i think the fairness @ win-win situation in this case is actually on the day we are gathered later Allah only sees our hearts whether good @ bad not based on if we muslim n trust Allah we go to heaven if not then hell. For example, there is human born as a buddhist but he has a good heart, actually when he grew up he believes the existence of god but not based on religion. so i think this human will go to heaven. what yall think about this. i need answer from experience of knowledgeable ppl.