Multinomial Logistic Regression- finding the probability of my response variable happening

See the FAQ: How to do a minimal reproducible example reprex for beginners and also the Homework FAQ.

As a polisci major, you should install the {pscl} package and take a look at its vignette.

I have a brief introduction to the fundamentals of logistic regression. One of the keys is that the odds ratio and probability are fundamentally different. Probability is lower bound by 0, and upper bound by 1. An event can not have a probability of 1.5. Odds ratios are lower bound by 0, but not upper bound.

This S/O post is also helpful.