My husband doesn’t care for sex

We’ve been married a few months now. Since we’ve been married, I’ve been the one to initiate sex or anything related. I’ve mentioned my concerns to him and expressed how it affects my confidence, etc. and nothing is ever different besides the fact that a few hours after we have an argument or conversation about it, he VERY vaguely “tries” to start something that really feels like it’s forced. For example, I was on my phone the night, going to bed, after we have an conversation and argument (that he turned it into) that day regarding the issue and he scooted closer to me and put his arm over me. I thought he was just going to sleep because nothing more was done. Period. Several days pass by and I mentioned the problem again and he said that he was “trying to” that night but I was “on my phone.” I personally feel like that’s an excuse because he did NOTHING more than just throw his arm over me. No talking, no pushing into me, no kiss, no “I love you,” nothing. WHAT is going on?!?! This has been the entire time we’ve been married. I don’t feel like this is how this is supposed to be. Before marriage he was all over me.