My relationship is missing intimacy, but I don't seem to want to find it.
Why don't you want to find intimacy again?
It takes too much effort to do alone.
I see.  It is not good to lose intimacy in a relationship.  You should look for ways to regain lost intimacy.
We are growing apart, I don't think it matters anymore.
Maybe if you are able to recapture the intimacy, you can repair the relationship. Talk with your partner about what you need and see if you can work something out.