Q.spaghetti squash spreading
My spaghetti squash is spreading like crazy. Can I cut back some of the new growth to contain it a bit? Also, some fruit are not thriving but think this is pollination problem.

You can cut back vines if you feel it necessary.
Leave at leave 3 fruit growing on a vine.
You can move vines around if the are in the way, gently lift them and move.
You will reduce your harvest by trimming back your vines.
Here are a few links.
https://www.gardeningknowhow.com/edible/vegetables/squash/growing-spaghetti-squash.htm
https://www.gardeningknowhow.com/edible/vegetables/squash/should-you-remove-squash-leaves.htm