Pharmacy or dentistry

Hi!! So I’m a YR 13 student currently, and I’ve submitted my UCAS application earlier this month, and I applied for pharmacy for all my choices. My predicted grades were AAC (in chemistry, biology, and maths respectively), so for some of my choices I was encouraged to put a foundation year to make it easier to get in/meet the entry requirements. I have gotten an interview so far so I’m trying to prepare for it but tbh I’ve wanted to do dentistry for 4/5 years now, pharmacy was never really an option. I mostly only applied for it because my teachers were a bit discouraging, and I already had pretty bad imposter syndrome, + other things going on the past few years that’ve made it really hard to concentrate on my studies, so my grades dipped (I had to go through so much hassle to convince my teachers to raise my predicted grades). And though it’s getting better now, I’m still confused on what to do for my future. Should just currently focus on my grades, and then take a gap year and re-apply?? I’ll have to redo the UCAT as well, and consider other factors like cost, since most of the unis doing dentistry are far from home but not the pharmacy ones. I’m just scared of taking the risk, what if I don’t get into the dentistry courses? It’s so competitive already…?
(Sorry this so long but I’d really appreciate any advice/experiences!!)