Something wrong with my marriage?

I get every marriage has their problems. Just wondering what you guys think about this particular issue I am having. Kind of hard to explain so I will do my best.

I feel like we are more withdrawn from each other. She can be in her room and I am in the living room watching baseball or messing around on my phone by myself. We don’t really go out on dates anymore. There is no more spark. There is no sex anymore. It’s like we are just here living in the same house. I notice these problems and I think it’s not normal but why doesn’t it bother me more? But lately find myself missing the attention she use to give me or I use to give her.