Some of Espedair Street by Iain Banks is set in Glasgow. The main character drinks in, or near The Griffin bar.
The Magic Flute by Alan Spence is a beautiful novel about coming of age and discovery in Glasgow 1960s - 1970s.
Any of Ralph Glasser's novels.
George Friel's Glasgow Triliogy is a belter.
Happy to lend you any of these if dough is tight.
Happy reading!