I went low-carb about 9 years ago, I feel quite good under 80g net carbs. I go higher sometimes but I immediately feel worse so it’s very short lived. 80-100g is my upper limit, I must stay below or face the negative consequences. Our sweet spots vary. Mine is about 30-80g but the lower limit gets smaller. Some people feels good only way below mine and some people seemingly needs way more. No one knows what works for you best.
Good carbs? People think various things about it. For many carnivores, all plants are bad. There are personal sensitivities. To me, net carbs matter the most but I like to avoid plain sugars and lactose (I like to keep them super low, not exactly zero).
When I went low-carb, I stopped eating legumes (except green peas, I never really abandoned those lovely things but they almost disappeared on keto), I ate close to no grains, no processed stuff and I avoided lactose too. It worked for me, I lost much fat and felt WAY better and my insane overeating stopped. But I can’t know how you would feel, I think it’s worth to try. I kept my vegetables back then, mostly the lower-carb ones and the most important carby ones in small amounts. 80g net carbs isn’t very much but enough if I spend most my carbs on low-carb vegetables, I ate my usual veggie dishes then and they fit into my carb limit if I didn’t go overboard with the amounts (but it was easy enough not to do that even for me, the huge veggie lover who almost never ate meat). It was nice but I had to evolve. 150g is way more, easier to fit the super carby legumes and grains but it’s more like a normal diet then. It’s great if you just cut out sugar and plain flour but if you can do it, it’s probably a good idea to be a bit more strict. 80g was super easy for me but yep, I saw people very miserable with 150g net carbs or just without gluten… So it’s very individual.
Bread definitely wouldn’t fit my low-carb diet unless it’s some thin pizza or lower-carb bread. And anyway, I would never consider it “good carb”. But I don’t have “good carbs”. Maybe the carbs in my eggs?
If I eat many carbs, it’s bad for me, no matter what I eat, many of us here are like this I’m sure. So you should try them out and see if they work for you, in what amounts and if they are worth it… I eat carby items, even very sugary ones sometimes (even on keto) but in very tiny amounts and that’s better than a mountain of low-carb vegetables with its huge carb content.
And if it’s about carb sources, I personally like nuts a lot… There are more or less carby ones but a huge amount isn’t good for everyone, to put it lightly, not even for me and I am really not very sensitive. Again, I can’t have any idea what your body will react to those, we humans are different…
I know about nothing about digestion issues but legumes don’t sound good, they are usually hard to digest and often don’t feel quite good for healthy people either. Listen to your body, maybe?