If you not popular : No
Until now, popular manager like Hhampuzz with high service quality still can be hired from the project. So, the demands still also good for people who have reputation and popular in here. If you start from zero right now, is gonna be hard for you and most the time will only offering cheap price because zero portfolio.
Thinking about being a BM? I suggest not.
Most of the reputable and known bounty managers are the ones receiving BTC-paying campaigns because serious projects are also looking for their portfolio.
If you have nothing under your name yet, what you can get are token-paying campaigns, and mostly will end up bad because they will disappear or won't pay.
But if you are serious to this path, you will start from something right? But if you have no patience, better not.
Because more than likely, the first projects that you will receive will either not pay you, or they will pay you but will end up as worthless tokens or coins.