Hi and welcome! Many of us on the forum have D/A dogs (waving hand here) - my girl (the lighter one, laying down) is dog-aggressive. There are many threads/discussions, and if you have issues you haven't found answers for, or need additional help, please ask - there are many talented people who can offer lots of suggestions and ideas.
Hi and welcome! You'll find loads of advice on reactive dogs, I have one who become reactive after being attacked by another dog, so look through the threads, as many here have reactive dogs and there's a lot of really good advice. Please post a thread giving details and we will all help you. Kudos for adopting a rescue dog