Acting/Performance Question

Question for those of you in the acting/performance field. So, I went to an open call (virtual) auditon last night for the tv show 'The Voice'. I checked and it's okay to attend auditions during the stike (so long as no contracts are signed and no actual production is done). Anyway, I didn't make it past the first round. Thing is, whenever I attend auditions the feedback is always the same and I'm at a loss as how to fix it. So, I'm always told that I'm very animated and have great facial expressions/body language and exciting to watch as a whole. The issue is that I don't project well which I find odd because, in normal conversation, I naturally talk loud and people tell me to lower the volume or use my inside voice. So why is it then that I'm not projecting properly when singing or reciting a monologue? It doesn't make sense to me. I've had no formal training for acting or singing; I'm 100% self-taught. I did take a couple of public speaking classes at university as part of my English Literature degree. Maybe it's a different type of projextion and I need to take a couple of acting classes? The only issue is there's not many for adults where I live and the one place that offers them is super expensive. Anyway, do you all have any suggestions or recommendations? Thank you in advance.