Is it hard to sell ETH?

I'm curious, is it difficult to sell ETH? I've been holding it for a while now and am thinking of cashing out some profits. Could you enlighten me on the process and whether it poses any significant challenges? Are there specific platforms or exchanges that are preferred for selling ETH? Are there any fees involved that I should be aware of? Additionally, what's the typical timeline for the selling process? Would I have to wait for buyers or can I expect a quick turnaround? Your insights would be greatly appreciated.