@kowgiirl.up ! Lovely to see that you are trying these wonderful buttonholers. They produce the most beautiful buttonholes, but they do take some practice.
I have several, for my different machines, but my go to buttonholer is the Singer Professional Buttonholer for my 611g Slant Shank. This has lots of templates included for various sizes and styles of buttonholes.
Don't give up, the buttonholes are excellent. If you are struggling to master yours, try YouTube, there are loads of really useful videos.
Jessie