Accelerator vs. having a broker on retainer vs. full-service advisory

Short-term lurker, first time poster. I know the answer to my question is entirely situational and bias but hearing thoughts outside of my own mind will be helpful.

I tried self-funding a solo search before, and I wasn't successful. In hindsight I see what I did wrong, but that doesn't mean my new search will go off without a hitch; knowing and doing are two different things. This means I'm seeking help.

I'm looking at my options like this: an accelerator, something like Acquisitions Lab, is appealing for its community support and guidance but likely too structured for me to get the value as quick as I want, while hiring a broker provides me bespoke support, which I can stop at any time, but has the potential to get expensive if searching is unfruitful, and full-service advisory generally offers a fixed cost approach and bespoke support but a large financial commitment.

I would likely go with a full-service buy-side advisory service if I could find one that can back up their experience. In my search I found people and firms I liked but at the end of the day I felt I was forced to take a leap of faith with them. I found reasons to eliminate people but never enough proof to substantiate them.

Thanks for reading and (hopefully) replying.