@Aldwinn88 Welcome to the BassBuzz forum!
Module 13 of the Beginner to BadAss course is all about playing slap bass and Josh has these videos posted.
Idiot-Proof Beginner Slap Bass (Every F**king Detail You Need to Get Started)
How to Slap & Pop Faster (Bad vs. Good Bass Technique)
7 Reasons Flea is Awesome (with Bass Lesson Tips)
I don’t know enough about slap to be much help other than that.
Also, if you can post a video, there are others here that can help diagnose any technique problems.