Chen and Bio are two a levels that unis obviously like - film studies is one of those subjects where most top unis would put it under the “candidate should only be doing one of these subjects” if u get me. So say if you wanted to do drama, film studies and chemistry, that would be classed as too many “weak subjects”. I was sort of in your situation last year, I was stuck between film studies and English Literature. I chose English lit as I did really well at gcse and I did enjoy it, but I honestly really wish I went for film now as I’m pretty certain I would be having a better time rn😅 in the end go for what YOU want to do. You’re the one that’s gonna have to put the hard work in to get good grades. If you don’t enjoy the subject you’re doing, it’s gonna be so much harder to get those higher grades. An A* in film studies is gonna be much more preferred by unis than a B in geography imo....worth to keep that in mind.
Good luck, hope I made sense!