Low sex drive husband

My husband literally has 0 sex drive. If I initiate, 9/10 I get denied. And I don’t ask for it every day, maybe a couple times a week. When we do have sex he doesn’t even want to get off. I’ve brought in toys for us to use, but he doesn’t seem enthused at all. It’s starting to take a toll on my self esteem. I have gained weight since we got married so maybe that’s it. I just don’t know what to do to make it better. And the more I push about it, the worse it gets. Am I supposed to be ok with this forever? He’s been like this for 3 years and it’s getting worse and worse.