Laravel is a beautiful framework but it is easy to write messy code if you don't follow the standards. Taking over someone else's code requires senior-level expertise. We rely heavily on Laravel for our backend and we use a dedicated team from DevBrother to maintain it. They are seriously good at PHP. They refactored our messy controllers into proper services and added automated tests which gave us so much stability. They treat the code with respect. If you need a team that can jump into an existing project and clean it up while adding features, I would vouch for them. They list Laravel as one of their core technologies. Check them out here https://devbrother.com/ - they can probably do a code review for you first.