[Help] Is it really as bad as i think?

So I’ve been having a big hole in my chest ever since my cat passed away. It was a tragic story from the start - We took him in from a farm where he was abused. He didn’t even get to be 9 months old. I’ve been thinking about if it’s even possible to try my hand at another cat but I’m very sceptic about it because of my dog.

I had my dog before the cat and I was very aware that the process of them going to get along was patient and hard work. It was... mixed? They often took turns chasing each other and my dog got pretty stressed about dinner. Sometimes they were fine and rested next to each other and could birdwatch together by the window. But a big thing was that my dog had 3 incidents when she peed on my bed during that time..

I know my dog is food reactive and in RARE cases even toy reactive.

I feel so hopeless about possibly getting another cat again but is it really as bad as i think it is? Any thoughts?