Baby groups near Waverley

Hi guys! I’m in Waverley, Rotherham looking for baby groups (7 month old) - I don’t have a car and have recently moved here and found that loads of classes are ones you have to book on in bulk and I’m all over the place so can’t commit to it. Did that recently and had to miss 3 out of 5 weeks so lost the money! I’m happy to travel on buses etc :) thanks in advance, you beautiful mums x