Wondering about Glasgow

Hi, I am an offer holder for Glasgow looking to start this September, and I just have a few questions!

Im currently considering Law/Pol at Manchester, or Common Law/Pol at Glasgow and I am debating between the two, mostly about cost of living for the uni

Ive been wondering how much per month it would tend to be for students on average at Glasgow.

I also know that as someone who is under 22 Id be able to get free bus travel throughout Scotland. How good is the bus network in Glasgow, and if I were to want too, would I be able to use this free bus travel pretty much exclusively or are networks like the subway more convenient?

I would also be interested to hear your views on accommodation at Glasgow, and which ones are best for first year.

Sorry for bothering you lol, and thanks alot!