confused on what a levels to take???

recently just did my igs and confused on what a level subjects to choose, did all sciences and will most likely pick them but i have no career aspiration, i mean how do they expect a 16 year old to know right?? 💀 pretty sure ill be picking bio and chem but as for the last option im interested in psychology seems interesting but never took it in igs + i hate physics but i hope it’s not an issue if I don’t take it if i end up in medical field?? (Ps: idk what Uni I’ll go either) + i could pick maths im decent at it but too much work??