Thank you for sharing your diet experience. I have had a ton of success with HFLC ( high fat low carb ) diet. I don't call it keto as I am not eating fat to satiety nor measuring my ketones, but I do monitor carb intake loosely ( between 20-30g a day ) and break to eat carbs when I feel my energy levels dropping out. ( I am active, I do Martial arts 2-4 times a week and will crash if totally depleted of carbs )
However I am a weirdo...usually vegetarian low carb if you can imagine that. Rarely i'll break for fish but like you do have beer every day.