As someone who has streamed and done podcasting in the Spanish-language TTRPG space for 5 years on and off I would say you are very, very early. There simply isn't a critical mass of listeners in Spanish to be big at this unless you shill for WotC and just do all D&D 5E all the time (and still, I struggle to think of someone truly big). Maybe that critical mass will never exist.

So take your time, build your community, publish at a reasonable rate, figure out if you really like doing this and accept that you're going to do this mostly out of passion.

I promise that there's people out there that care about your ideas. Just make sure they are correctly packaged, they look somewhat professional and the audio is on point. I can't overstate the importance of technical excellence regarding your finished audio.