Terrible sex!! I'm sexuality frustrated!!!

So we use to have okay sex it's seems to get worse and worse by the months like shit! I know i gained weight alot...idk sure he's not attracted to me physically but shit big girls still need sex to I'll loose the weight eventually but I know he's gained weight to i wonder if his testsostroms low? Bc he's not fat he seems to jack off alot to Porno bc i find the websites on the iPad which kind of annoys me bc im sexually frustrated and we tried to have sex but it's terrible he's lazy and im a bigger girl so we both get tired quick! So I'm imaging he's not physically attracted to me anyways what should I do 😭😭