It's sounds like you don't like what you are writing, but others do?

Most great artists or songwriters have a lot of repetition and commonality from song to song. That's what makes them identifiable. Repetition becomes a problem when it's poor quality repetition or just done way too often, without any variation.

Perhaps the repetition is not the issue...

But rather that you don't like the writing style you've created for yourself.

That's pretty common.

The antidote: Write more. A lot more. Focus on developing and making better the parts you really really like and getting rid of all the rest.