There are so many websites for finding tutors. I would advise you to check here first of all to look at the profiles of tutors from Glasgow https://nicetutor.co.uk/subject/mathematics/glasgow This is a professional site, so only experienced tutors are offered there.
Read the descriptions of the profiles. I think that this is the best solution, because in the description tutors indicate what experience they have and what successes they have achieved in their work.
There are so many websites for finding tutors. I would advise you to check here first of all to look at the profiles of tutors from Glasgow https://nicetutor.co.uk/subject/mathematics/glasgow This is a professional site, so only experienced tutors are offered there.