I noticed you said you avoid the fake bread etc. What is your feeling on Keto Bread? Myself and my mother (who is amazing at support) found recipes on DietDoctor to make Keto Bread, I think we cracked it in terms of the bread on our last effort and I find it really good, throw in some bacon and an egg and it's a really good sandwich with practically no carbs.
I suspect that BB was still in the supermarket looking at the row of processed breads. I used to call it plastic bread rather than fake, but similar sentiment.
Certainly, those with the time and inclination can find suitable recipes to cook up something that does the job instead, but it will be hand crafted, not industrially processed, and will be a niche product produced on an 'as required' basis. It will probably be more expensive to produce commercially, so is probably not the sort of thing a supermarket would want to sell. So yes, DIY will get round the problem to a reasonable degree, but it sounds that you had a certain amount of trial and error before you got your alternative.
Finding a suitable LC alternative to the staple of life is proving to be the holy grail of this forum, and is a perennial question raised on the forum. I personally am lucky in that I have found a multiseeded loaf at my supermerket that I can tolerate, so I do not need to go on this quest myself. But then, I am no longer using keto diet so do not restrict my carbs to eye watering levels, as some here do.