He legit won’t give me a reason?

I’m so lost and all I have is to wonder in my own brain.

I’ve asked so many times and I just get so many excuses!

He won’t have sex with me like hardly anymore! We have been together 5 years. Have kids together. Like we are so happy but sex is like not there anymore. Back a year ago he wanted sex all the time. Hell the 4 years ge always wanted. This last year just dramatically changed. It was to the point for months we only had sex like a handful of times and I initiated it each time. I’ve brought it up to him, asked him so many times if somethings wrong, if he’s going through things maybe mentally, if his sex drive has gone like what could be the issues here and he says no everything is fine but gives excuses like tired or stressed those times. The thing is he plays games when our kids go to bed. He’ll be on his games for hours so like if he was “ too tired “ he wouldn’t be on his games. Nothing makes sense. I ALWAYS initiate sex now. For the last year. There’s like no desire on his end to want me like that? And he won’t give me a reason. I even took him to a sex shop to “ spice “ things up and he had no interest getting him there was like pulling teeth. While we were there he did want a “ pocket pussy” which he never has before but I didn’t feel comfortable with that since he barely even has sex with me let alone wanting to use something tighter and fake.

When we do have sex it’s fine it’s just getting him to want to have sex. Idk it’s so weird.

So now I’m left in my head and probably not thinking the right way but I’m just overthinking at this point.

He is a good guy just this aspect. I don’t think he’s cheating at all. But then again I’m like what is going on?

Is this normal in a longer term relationship? I hear this happens but like what do you guys think? Like I just want answers I wanna feel wanted sexually. Is it me? Am I not good enough anymore after having kids? Like he’ll reassure me and say that it’s not me but I feel like it.