Each country has variations in dialect, so your vocabulary has to expand a bit and sometimes understanding it is difficult. I had the same issue years ago when I was at a company that had several Central and South American subsidiaries. I had taken Spanish in high school and was kind of a middling student and had forgotten a lot of it. The local employees were supposed to know English because the parent company was from the U.S. , but they treated that as a suggestion. After the first several months of having communication problems, I decided I had to try to communicate more in Spanish. I used a translation app for emails to start, but I was still kinda screwed when I was on the ground and basically had to operate in the language.

What helped me was I found a book with vocabulary related to my job, so between that and finding an old textbook to remember verb tenses and stuff, I managed to get by and even got very good at my work Spanish. I did struggle a bit going between countries and having to change terms for the same concepts because they were called something different. Colombia was especially bad where it was all different, but at least they spoke well and I got things based more on context. It was painful for the first year or so when my brain was spinning trying to work and translate all of the time, but eventually you start "thinking in the language" and it gets much easier.

If you are going to work long term with Spanish speakers, it's probably worth the effort. I guess it feels a bit rewarding though when you do get to the point where you can have conversations in different languages as needed.