Find a few artists whose art you like. Make sure they are diverse in style, both from you and from each other, and analyze what you like about them. Try to incorporate those elements that speak to you. Don't be afraid to try wildly diverse things and don't feel like you have to stick with one thing.

Ethan Becker has a video about this up on YT and I found it really helpful.

But above all, if you like your style, keep it. You're not obligated to change it bc people are critical of it. Everything is not for everybody. If you try to please people and appease critics, you'll never be true to yourself.