Thank you everyone so much for the encouragement and advice, I really appreciate it! I will take a look at that link for a generic walking foot, as well as fiddle around with the presser foot to see if I can adjust it like suggested.
I didn't know about there being a spray for basting - I will definitely be trying that the next time around!
Again, I really appreciate the kind support. I've been muddling through it with guides on the internet, and wasn't expecting to have problems like this during the quilting - I definitely overestimated how easy it would be to pick this all up without error!