Mathematik in der Chemie / Spielfreiheit / Literaturempfehlu

Hi folks, I recently received an offer for a master’s degree in chemistry in Oxford.
I`m a graduate in biology, chemistry, and math, and I`ve read the most common chemistry entry books: why chemical reactions take place, a handful of very brief introductions, mechanics guide, and a few math books. I totally regretted taking biology and should have done more math and physics instead (the revision will take some effort). And I`ve been thinking about applying to lower level universities to do chemistry with math. I love math and maybe the only reason my chemistry teachers are not giving me the opportunity to ask in-depth questions and I get the impression that you can`t mess around with the concepts the same way. Obviously, it`s a science, so theories need to be validated so that you can`t always just figure out how to make a synthetic spider web from a slab, which is, of course, part of chemistry expertise.