a level options

for pharmacology you need biology and chemistry.
No you don't.
Please see the example I provided above.

For chem engineering maths and chemistry are required, for pharmacology you need chemistry and some unis also require Biology. Therefore from a uni application pov taking maths, chemistry and biology is your best option to keep as many courses in these areas open to you as possible.
However, if you didnt like biology at gcse or would rather take psychology then there would still be some options in pharmacology for you asking for chem and another science. This might work for you as pharmacology is your back-up option.
If you want to keep both open though go with bio, chem and maths and but you could always start with all 4 and see what you feel like after a few weeks or if you manage well even dropping one at the end of year 12 when you should have a clearer idea of what you want to do at uni.

Check the entry requirements for a range of different Unis and see which A level subjects are essential or 'preferred. For Chem Eng, Chem and Maths are the most important subjects, and for Pharmacology, its usually Chem and 'one other science or maths'.
Examples :
Pharmacology | Study at Bristol | University of Bristol
Undergraduate degrees | Chemical Engineering | Loughborough University (lboro.ac.uk)

ahh thank you!!!
I didn't particularly dislike biology at GCSEs, rather I'm more scared about applying the knowledge since I would find the questions difficult to answer, hence I'm worried about taking it for A-Levels
I'm also not sure how much of it I remember 😅
but I did get an 8 for both my year 10 & 11 mocks if that means anything

8 is a strong grade! Id suggest looking at some YouTube videos from students who’ve done it for a level and see if it sounds appealing from their experience. Maybe the option of taking it for a bit and then dropping it if you prefer psychology could allow you to see if the questions and content are more of interest if your school will allow it. Are you waiting for your GCSE results too? Im getting mine on Thursday (I know it can vary a bit), best of luck if you are too!