Cost and options for doing an A level outside of school? (with science practicals)

Basically as the title says, I'm going into year 13 this september with predicted grades ABE. The E is in biology and I really don't think I can get bio up enough without sacrificing my other two subjects. In order to get into uni, I'm thinking of doing A level chemistry after I finish year 13. What are my options for doing this (eg, online or in person) and roughly how much would they cost, including practical endorsements and exams? It's so hard to get a decent from just google.

Basically as the title says, I'm going into year 13 this september with predicted grades ABE. The E is in biology and I really don't think I can get bio up enough without sacrificing my other two subjects. In order to get into uni, I'm thinking of doing A level chemistry after I finish year 13. What are my options for doing this (eg, online or in person) and roughly how much would they cost, including practical endorsements and exams? It's so hard to get a decent from just google.

If I may, what course are you interested in at University? Does it require chemistry, or do you just need the grades? What are the general grade requirements at different uni’s, or do you have specific in mind?

Thanks for the reply, but ouch, that's a lot. I'll be 18 at the start of the academic year (which would be September 2026). My other subjects are psychology and physics, and I'm looking at chemistry because it's a well regarded STEM subject - I don't think I would suit a humanities A Level. I don't need chemistry specifically, as most psychology degrees require either psychology A level and/or any science A level, which I have from physics.