I've been playing bass actively for a few months now, and I'm getting stuck advancing my technique. I'm at a point on which I can play easy/normal songs easily, but other songs just seem too difficult for me to learn and I give up too quickly. I also play in a band, and our songs are mainly pop punk. So the bass lines are usually really easy. Now I want to learn more stuff, I want to advance and play "like those guys in pedal demo's on youtube do" I want to be able to generate some cool bass line on the spot, but how do I do this? How do I build up my technique from playing basic songs towards being able to play generatively? Where do I start and what route do I take?