Being unable to get an erection is quite common. You can use drugs like Cialis or Viagra, If those don’t work, you can get a penis pump, which can get the length, but not The rigidity.

Injections like bimix or Trimix can get what you want. Problem is that the drugs reduce the libido so there’s not much interest in having sex.

Craving sugar is Not common, but craving food is a problem for some people on ADT. Sugar feeds the cancer so you don’t want to eat too much of it.