What should I do with my hair? 0 products, shampoo + conditioner, or just conditioner?

Ive seen some other threads about this but wanted to confirm, Should I just only use conditioner, shampoo and conditioner, or none?
I know the picture is ass but if you can still understand then it would be greatly appreciated.
My hair currently is around low - medium length, similar to a lesbians hair cut tbh just a bit longer.