I'm bored

I'm bored of my sex life. We always do the same thing every time, we rarely switch it up, and it's always so predictable. I've tried to "spice things up" before and he just seems to laugh it off and continue all the same old stuff.

I've gotten to the point where I just don't want sex anymore because it's a waste of time or it's annoying. I used to want sex all the time, and we used to do it all the time. Then suddenly he just started telling me no and we went from doing it 4 times a week to like 2 times a month.

Now I don't initiate it anymore, now I just do it when he decides to come to bed with me and wants to. And sometimes I'll say because like I said earlier, it's annoying.

What can I do to fix this?