The clock.tick returns the time since the last call to clock.tick. Use that value and multiply all your speeds with it when you move.
Example
dt = clock.tick(60)
player.position.x += player.xSpeed * dt
player.position.y += player.ySpeed * dt
This way your player will always move at the same speed independent of what you put into the clock.tick()
function.
Important is to only call clock.tick()
once per frame.