Sugar, wheat, sometimes dairy, can be profoundly addictive. Some people have a horribly hard time getting away from them indefinitely. They often eat just tiny amounts of something that keep the longing active in them.
People new to keto also often eat a far more limited diet than they need to. The other day I was looking at an old blog I had when my kid was a teen, and our dinners were things like: thai-based beef stir fry; chicken red curry; bacon mushroom chicken alfredo bake; ‘godzilla burgers’ (burgers with bacon and blue cheese mixed into them); and a deep fried protein-ball-thing stuffed with diced pepperoni and italian seasoning and parmesan, that we dipped in marinara; cold chicken pesto salad; in other words, a lot of different foods. I had a teen and I wanted my lowcarb food to be entertaining for her.
But most people, keto eating is so different than what they’ve done before, that they end up with a very small dietary range. And they’re often overdosing on things they never really ate before and maybe aren’t even that fond of. I have known people to say, “If I have to have more eggs or coconut oil I’m going to scream!” Well you could eat keto and never have a single egg or coconut oil. That’s a lack of searching and exploring the options, not a keto requirement.
If you don’t want to eat keto, there is certainly no rule you must, but it’s very sad to see someone abandon what could be an incredibly healthy upgrade in their life, because they just didn’t put the effort in to explore the many options for delicious food.
Blackberries for example are fairly low carb. You can have enough of them for a yummy smoothie. Sweetener alternatives (allulose is one I’m reading about lately - a real sugar, not a sugar alcohol, but zero carb) and spices, almond milk, some cream or kefir, could make that truly delicious for a fruit smoothie. (This would likely make me want to nosh, but some people aren’t affected that way.) My point being that there are sweet fruits – like most berries – that you COULD eat in small amounts for something yummy in that category.
Whatever you choose to do, I wish you well. 
PJ