how to choose a filler HL subject?

I am currently in pre-ib and i have to choose my subjects. So far I have HL English A, Bio and SL danish ab initio, history, math ai. I need to choose one more HL, for now I have put in Chem HL but im not too sure. I chose chem cause my friend says that its easy but from what ive seen on the internet im not sure. im also not that good at chem and im afraid im gonna suffer. Any tips? (btw I have no idea what i wanna do for uni, so the uni requirements dont really matter)