Let's get bald/wild and let's win

Does it sound natural? When cheering on a team in a sport game.
If it is wrong, can you teach me some expressions?

What I want to say is like "Don't be shy, be brave, do something new,
Do play like a beast, be creative, don't be a coward...etc."

Thanks in advance!

Question

Let's get bald/wild and let's win

Does it sound natural? When cheering on a team in a sport game. 
If it is wrong, can you teach me some expressions?

What I want to say is like "Don't be shy, be brave, do something new, 
Do play like a beast, be creative, don't be a coward...etc."

Thanks in advance!

Answer

There's one cheer that is almost universal in any team sport: "Let's go!" You can never go wrong with that one.

If you want to add a little more, You can say "C'mon (come on)! Let's go!" and/or add the name of the team:

C'mon Tigers! Let's go!

Let's go, Tigers!

Answer

Very unnatural.

Let’s - can only be used if you are on the team and encouraging your teammates.

Bold, wild, shy, brave, beast, coward - don’t usually apply to sports.

‘Let’s go, guys!’ (You’re on the team)

Fan:
Give it everything you have!
Give it your all!
You can do it!
Go team!
Go for it!