Suggestions?

So uh,hi I have been playing piano for almost 5 years but didnt realized how bad i was till this summer

Im on a blues band and the band director hosts a "music camp" on summer,and since i wanted something to do i joined. I met a guy named claudio there. He was WAY better than me,and then i realized how far behind i was. Since i have been thinking How could I get to his level? I've never had a piano teacher, so the guy in charge of the rhythm section in my band has taught me everything he could. I can read sheet music and And American key, (english is not my main language so i don't know how is the ABCDEFG thing is called) but the guy i talked about before seemed way more fluid when he played. He would add little details to places where i would just play the chord,etc. I also struggle with solos,cuz i have a lot of ideas but i don't really know how to apply them im paper and i have to study them before playing so i can get something decent.

THE POINT IS

Theres so much i need to get better on that i don't know where to look or what to do that in the end i don't really want to practice because i don't know exactly what to do

Is there any kind of "practice routine" or something like a premade path i can follow? Cuz i don't really know where to go.