How do i make a run animation?

I need help so badly please help?

This is not a request site, Although i will help.

First you need to make an animation. You can do this with the animation plugin. https://www.youtube.com/watch?v=u8jZs-DqPR8

Next you need to export your plugin and get the Id

Now we need to use it. Lets make a character wave when a player joins. We need to put this script in a dummy we can generate with the plugin.

id = -- your animation id
game.Players.PlayerAdded:connect(function(p) -- when a player joins
	repeat wait() until p.Character -- wait until the player spawns
	anmi = Instance.new("Animation", script.Parent.Humanoid) -- create a animation and put it in the --humanoid
	anmi.AnimationId = id -- set the id
	track = 	script.Parent.Humanoid:LoadAnimation(anmi) -- Loads our animation and preps it for use
	track:Play() -- play the animation.
end)

this is not tested.