A good buyers agent won’t pressure you into any purchase and may end up showing you at least a dozen homes and can give you advice on bidding / actual value of the home, and can identify issues with the house before you’ve bid.
The key is that they’re prioritizing the long term network effects of being well recommended. Our buyers agent was great and I’d recommend her in a heartbeat. She definitely saved us from a couple of potential disasters, and from overbidding (likely saved us low six figures all things considered).
But obviously there are a lot of agents that prioritize turnover rather than actually helping you. You definitely have to either judge them carefully or get a positive recommendation from someone trustworthy.