I'm varsity on the swim team but I'm like the slowest. But I don't want to be the slowest. So is there some way I can swim faster? Any tips? Any specific way my arms should move when I freestlye?
Oh and I do mostly freestyle and breast stroke.

Since you are on the Varsity team, you probably know this...but first, I think it's more important to have longer strokes as opposed to faster strokes. So reach out and thrust yourself forward when you reach. I think the recovery arm should be thrusting opposite direction of where you're supposed to go. Ask your coach and teammates. You are on a team after all. They should know better than me.

Well, when you're pushing through the water, keep your fingers together so you get the most 'pull'.
Make sure you can actually feel your hand pushing yourself through the water.
Longer strokes, only put your hand in when you've reached as far forward as you can.
elbow bent, try to make your fingertips 'stroke' the top of the water when you do your strokes.

for breast stroke, try to get your kick strong, cos thats the one which propels you most.
oh and for your arms, only bring them out about shoulder width..not further than that.
practise breast stroke kicks...and try and minimise the amount of kicks you do for a lap.
less kicks=more powerful kicks. but you gotta weigh that up with speed too