I learned a bit about how to talk like samurai thanks to this article: https://www.lingualift.com/blog/speak-like-samurai/
I learned the grammar point ございます today, and I thought of でござる
One tidbit: If anyone has seen Tada Doesn’t Fall in Love, then you’ll know that Katajikenai (忝い) is a big motif in the anime.
Small things like these are what keep me motivated and inspired to learn Japanese language, grammar, and culture.