ggplot of lda seems inverted

Could you please turn this into a self-contained reprex (short for reproducible example)? It will help us help you if we can be sure we're all working with/looking at the same stuff.

install.packages("reprex")

If you've never heard of a reprex before, you might want to start by reading the tidyverse.org help page. The reprex dos and don'ts are also useful.

There's a nice FAQ on how to do a minimal reprex for beginners, below:

For pointers specific to the community site, check out the reprex FAQ.