I tried this one with a few adjustments: https://tastesbetterfromscratch.com/authentic-new-orleans-style-gumbo/
The Aldi didn’t have single green bell peppers, so I used a mixed bag. I also used another sausage than andouille, but I think it’s close enough. Last, I replaced chicken broth with veggie broth because I have so much of it. Totally forgot that I have some self made in the fridge which will be used next time.
You are right, I did that and forgot to mention it. I fried the sausage, put it to the side, fried the veggies in the same pan, but not too long and then added some broth to dissolve the brown flavours from the pan.