if you are having issues with your spell casting, maybe your not fully centered, grounded or focused on the spell work. I write my own spells to imbue more power into them and they work well. think about writing your own,they do not have to rhyme as long as the desire and intent are there. Remember cause no harm and the rule of three.Good luck on your path and remember it can take time to get into the spot you want to be.
Blessings and providence: