Muslims can u answer dis?

so i am a muslim, i avoid sins as much as possible, i worship Allah as much as possible and do all the obligatory stuff. However, i keep doubting in Islam and God himself ( I seek refuge from the cursed Devil ) and it really makes me scared and frostrated. I do whatever i can to increase my faith but nothing works, however, i usually defeat the doubts and im still a muslim but tell me what to do to increase my faith and ALSO, if u doubt a lot but u still worship God and follow the sunnah of the Quran and the prophet Muhammed (ppuh), do i still go 2 hell although i lived exactly like a muslim and how God wanted me to live and the purpose he made me for .