Moving to a code reviewer because my company can’t afford hiring more people

Managing 8 engineers, jrs who obviously need extra help and supervision, PRs that need to fulfill the required quality and little time to do everything is getting to a point where I told the core team that we needed extra hands on this but they can't pay for it yet. I end up working 12+ hours a day up until midnight to try to catch up and get everything done but dude this doesn't worth my sanity no more. I've been carrying too much pressure this isn't even about money anymore. So I decided to move to use code reviewers to try to solve this issue or at least to automate most of the annoying stuff so I can focus only on what's most important/complicated. I'm contemplating trying greptile and coderabbit, for what I can tell looking on other posts on reddit these seems to be solid options so I would probably give the first one a try, if they don't want to pay for more people then this is the only option I can see that is cheaper and might speed up things and take some work off my shoulders. Am I doing good going with these options or do you think there are other that could work too? In case you tried these, are these easy to implement?