I do ok with a tomatoes based soups. I have a homemade bean/ham soup I make that is tomatoes based. Raw tomatoes, from the garden, is where I have run into problems with acidity. I love fresh mozzarella, onion, basil, and tomatoe salad with a good olive oil. I gave up eating this once I started battling fissures.

I think nuts or nut butters are one of the best items for nutrition and fiber. The problem is finding out if you can eat them or not with a fissure. I eat creamy peanut butter all the time without issues. Almond butter is also awesome. I also eat whole pecans and almonds daily. I know most people say whole nuts area no no not to be eaten with fissures. They don’t cause me any issues plus they provide lots of nutrition and fiber. I have found walnuts and whole peanuts don’t digest as well for me so I avoid those. I have also found that I can't eat chocolate/hazelnut bar - my all time favorite combo.
I think everybody is different in terms of what they can and cannot eat with a fissure. When you suffer with a fissure for a long time you get plenty of opportunity to tinker with the diet. If I am unsure about a particular food I will try a very small portion first to see if I can tell how it will go through my system.
Are you able to eat Avocado’s? They are packed with nutrients. We go through a lot of a them in our house.
Good luck with your continued healing.