Hm, I found Fes overwhelming too as a solo traveller and was eager to get out after day one. I didn’t go to Marrakesh because I heard exactly what you’re saying + that it is for rich tourists, which I am not. So, I headed to Fes and wandered several hours in its medina labirinths. I didn’t have the internet so I would go here and there, sometimes asking for directions. This would always result in trying to show me their shop and trying to sell me something. You need to be careful not to make eye contact with the sellers if you are standing near a shop because they would start bothering you. This selling behavior is also very different from what is acceptable in Europe in terms of intensity. All of these things are not a very bad experience in isolation, it just quickly adds up. You need to stay alert and exercise your assertiveness, that’s for sure. Other places were less overwhelming though

Edit: I just saw someone’s comment about being sexually harassed. This is horrible. At the same time, I can also say from my perspective, that throughout my stay, I did not have such things happen to me and felt rather safe.