Who has time for training? My small team is about half the size it should be. I'm already rarely doing stuff I already know how to do each day. I'm supposed to

Who has time for training? My small team is about half the size it should be. I'm already rarely doing stuff I already know how to do each day. I'm supposed to rush to keep up with all the new stuff I meet on the job AND do training on stuff I'm mostly not going to need to know for work, yet somehow remember enough of it to pass an (expensive) certification test? Reality does not suit a subscription model for this kind of training. Better to buy or download something I get to keep until I have a chance to use it.