The colors look amazing, well done!

I’ve had the same issue with those red streaks. I’ve seen a massive reduction to them by using a lens heating strip to eliminate dew sitting on the lens.

Also make sure your white balance isn’t set to auto.

You can somewhat get rid of them in photoshop:

Select by brightness, select something very bright to get all the nebula and stars selected, then select inverse to select only dark sky, feather a few pixels and then go to color adjustment and darken the red channel a bit until the streaks aren’t visible or generally better.

Hope it helps!