I made a scarf by knitting one row and purling the next but now my scarf is rolling in and i was wondering if i could do anything to make it stop!
That’s stockinette st and that’s what it does. Usually you would work 3 or 4 sts at the beginning and end of all rows in garter st (knit on both sides) with about 4 rows of all knits at the cast on and end too. If you don’t want to redo it, you can crochet a simple edging around it it.
You could put big tassels or heavy beads on the end to weigh it down and uncurl it. You could also iron it with a towel in between the iron and knitted scarf.