I have not watched sex for about 8 months and still have not desire for sex most of times!

Iam on softmode for about 8 months . Don't watch sex but sometimes I mastrubate or have sex(rare because most of times I have weak erection ) , and still have not desire for sex most of times! However when I was watching porn.. I always had high desire for sex and my erection was very good for having sex any time I want.. That actually makes me now want to go back to porn and faping to get my old high sex desire and my good erection for sex.. So help me what should I do?