The ideal situation with this many controls is to let the player decide however generally you want to go for modifier keys positioned comfortably around WASD like Q, R, Z, X, C, V, F and then use modifiers like R for wall jump or shift + R for wall hop
Viewing post in Rate for Rate - I will give every game the time it deserves
Left click to skip through dialogue, the right hand doesn't NEED to do anything. It's pretty common for left hands to control almost every action in a game and the mouse is used to look around/interact with NPC/dialogue. There's been so many games that have had right hand controls so maybe this is more common in other Countries but it definitely isnt the norm when it comes to default keys in most high profile games and its been pretty hellish for me.