closer to God

I’m 16 and I used to have good faith, not the strongest, but I’ve been going through a difficult time at the moment especially with mental health and now I just feel so far away from God and I want to be able to feel like this faith and relationship and love is back. None of my family are religious and I have no one to talk to about this. I want to make my relationship with God better but I don’t know how; I don’t know where to start (I feel like I’m at the beginning again). If anyone can help me find a way to build my relationship with God again, I would be so happy because I feel lost right now