Erina.

I buy good quality knitted items from second hand /church shops. Unpick the garments and wash the wool. You need to wind the wool around the legs of a chair or something similar, like someone’s hands if you have a helper to make a skein. Tie it loosely. Wash /soak for a while till all the crinkles of the previous knitting are gone, then tie on the line to dry. Then rewind.  If you try to knit previously knitted wool without washing it will not look nice. I recently did this, buying an item for 50 cents which gave me wool worth $6-$7 dollars in the shops.