It really takes time for you to be in the church again. I myself have been inactive for years..sometimes I would attend church sometimes not. But i never los my testimony for the church. Its just hard to get back when you have no friends. Yeah you can go alone but sometimes you need to have atleast someone who fully supports you in going to church, activities, etc. Have faith in Him, He will always make a way in the right time but you have to do your part.