Help me grafting!

So I tried myself, didn't work out….Pic 1. I wanted the Peyote on the Pedro.
2 weeks in and I removed the tape, came off fast 🙁

I have a some similar 🌵 I could use for a rootstock, can someone pls give me a advice on how too do this.

I add pictures from my 🌵 I could use for this, but they are different strains and some are too big, I guess….

My goal, a peyote graft!