Will Allah forgive me for this sinful act?

I masterbate, I know its sinful in religion but its completely normal in life and age and puberty and all that, besides so many people including my teachers say that its completely normal and its a great way to practice for sex in the future plus its a great way to take of stress without physically or emotionally harming others. And its true! I am very depressed in life and I do this to take stress off many times a day. But I pray to Allah everyday in dawah to forgive me for this sinful act because If I dont masterbate I think my pressure will build up from my depression and I already have suicidal thoughts sometimes from depression so I dont know what would happen, but would Allah forgive me? I really dont want to make Allah unhappy of me I truely do love him and admire him, infact if he was a person Id take a bullet for him. He's like my best friend my favourite relitive my best everything my mentor. But I dont want him to be mad at me and send me to hell because I tried to calm myself from physical and emotional pain to myself. But the masterbation part is half of whats sinful about it, its what I look at to masterbate that makes it mostly sinful. Allah gave us body parts and sperm for use but we have alot of sperm, isint it alright to waste some? Please do reply.