I've often wondered if I am diabetic due to me getting super tired every time I eat anything sugary. That being said, I feel great on keto so I haven't bothered getting it checked.
I'm a big fan of keeping keto simple. A nice meat and some dark greens is always my favorite. I do sometimes try to find keto substitutes for non-keto things, but I often find that it makes sticking to keto harder. I'd rather just give them up all together most of the time.