Lush Caves are very hard to find in minecraft 1.18

I created a world in 1.18 and tried exploring the new features and i wanted to find a lush cave but i couldn't. I almost travelled over 2000 blocks and still couldn't. Even if i find one its too small. So please try increasing the chances of finding a lush cave.

I don't play on beta so i am not including 1.18.10.21 in the affected versions.
Please increase the chances of finding lush cave