Evenly/Randomly distributing a selection

I am making a space themed scrolling background for a game. I want to take a shape, in this case a star which are just white/gray crosses, and distribute copies of them randomly across the canvas. Ideally id like to be able to do this with a few variations of the shape itself.

I’ve tried making a custom brush and that works pretty good but, as someone who is very new to art as a whole, I find it difficult and time consuming to try to distribute them evenly but convincingly random myself.

Im wondering if someone here has had a similar issue and has solved it, and could possibly point me in the right direction? TIA.