Vrchat Walk Animations, How to make custom Walk Cycles?

[glacial cosmos]

My friend wants me to help him with a bounce walk cycle, but even if i came up with any type of walk cycle, i dont understand how to add it to a tree, replacing these animations in the image that are just 1 singular frame of the full in game VRChat walk cycle.
Do i just make any walk cycle with any amount of frames and place on their respective angulation on the animation tree?
Where and how does VRChat make the interpolation for taking steps?

I was directed to ask here, i am it is not specifically about GoGoLoco

[desert gust]

The animations will be interpolated in the blendtree.

The reason the proxy only has one frame is because the real animation gets added when uploading. Copyrights thing since from mixamo

[glacial cosmos]

if i were to make my own animation cycle, how many frames must it be?(Assuming i want to make just the run forward one)

[desert gust]

You usually want the same amount of frame for all directions

Or the same length

[glacial cosmos]

But we dont know how many frames those are if i just want to replace one of them since it only shows 1 frame

[glacial cosmos]

So how many frames should I do?