Listen, I took 2 months of practicing to get used to parkouring, and another month to semi-master balancing and stuff. You want to get a player who is better than you, like i did, to play with. Parkour with them, trust me you will fail, but practice makes perfect. Also Mocucha tutorial and MOFF run guides also helped me. I suggest also looking into tricktionary, since most of the moves ive learned from there are used in parkouring. Hope you get better and this helped.
-Sincerly Fiddle ^.^
PS- Need a parkour buddy, shoot me a pm whenever u wanna parkour, and i will help