Boyfriend got mad at me for saying he’s bad a fingering me

So last night me n my bf were having some sexy time and I did enjoy it, he enjoyed it everyone was happy. And then afterward he made a joke about my handiobs not being very good I said the same thing back to him about his skills. He said he’s just joking and I said yeah me too… a little bit. He asked what do I mean and then I gave him some advice on how it could be better (Which he is always telling me I can do) (I’ve also given this advice during sexy time in a chill kinda way and he kinda just doesn’t understand in the moment so I let that go). But after I give him this advice, he’s really offended saying that I’ve been faking it and I’ve been lying for a year and a half (the time we’ve been together). I told him no, I do enjoy it it could just be… better. It’s just advice and he shouldn’t be hurt by it. He gives me advice all the time telling me that some things I do aren’t good. I don’t get hurt by it I just do better next time. Idk what to do. He’s literally lying next to me in a sulk and everytime I ask him if he’s okay he just says maybe and that I could’ve said it in a nicer way. Am I being crazy? Was I mean? Should I have brought it up at a different time and not right after sex? Maybe? but I feel like he can’t be mad at me (not this mad anyways) for giving him advice on how to treat my clit right

Please give me your opinions, I’m not very good at seeing if my behaviour is right or not. Need some outside opinions

Thanks