It is normal that some ICOs do not pay if the project has not raised funds. Even if they send you tokens, they will be useless since the project will not be listed on the exchange. Therefore, choose the project carefully.
there may be other options such as increasing the time of ICO sales to attract investors, but the bounty hunter is also affected, because the bounty will continue until the time specified by dev.
not all projects that do bounty are always successful in ICO sales what else is the current lack of investor confidence in it.