Any good tutorials or manuevers for fighting against multiple players? (Top tier: ARH)

Mainly, Sense everyone will eventually come to fight against players in 2v1’s, 3v1’s and higher.
Are there any good tutorial area’s on youtube or anywhere that could give a guideline on what to do?
(Will add that this is supposed to be for more skilled players that can usually win 1v1’s)

{i could probably list some situations that lead to these and we could delve into them a little bit as well}