Need help,over my head with the M-2 theme

I purchased the M-2 theme for my business, and now it seems that I made a big mistake. This theme is much more complicated than i imagined, and there are no tutorials. I am lost!

You should ask the author about purchased item either in the items comment, support ticket (since it’s a theme, so the author probably supports this item) or message via the contact form located on the authors profile.
The community won’t help you much with the theme, especially if you got support from the theme creator.