How to shower correctly? Tips needed.

Hey, so I’m 18 and recently just moved out of care, so I didn’t really grow up with any women who were able to teach me things like this. I don’t think I’m showering correctly because my vagina smells after like three days. At first I thought maybe I had an infection but I don’t think it is. Then I found out I haven’t really been showering right (please don’t laugh, i’m very nervous to even ask for advice). Could someone please tell me the proper way to shower? I have no idea what order I’m supposed to wash in, or what shower gels I should be using. I’m in the UK, so if anyone could please tell me what products and the correct order to do it, I’d be extremely grateful! Thank you ☺️