Questions about example sentences with, and the definition and usage of "Privious"

A: you mean "previous"?

it means "past" or "before" or "old" ..depends on your sentence

A: × As I said to you in my privious email, I worked at XXX corporation for 10 years and last 4 years I worked for Japanese students who whsihg to study abroad.
✓ As I said to you in my privious email, I worked at XXX corporation for 10 years and last 4 years I worked for Japanese students who wish to study abroad.

× Particularly I was in charged of proceeding their applications for foreign Universityes, Community Colleges in the States, Canada, the UK, and Malaysia.
✓ Particularly I was in charge of proceeding their applications for foreign Universities, Community Colleges in the States, Canada, the UK, and Malaysia.

× Actually I myself am still working on communicating in English even though I was an agent of study abroad.
✓ Actually, I myself am still working on communicating in English even though I was an agent for people who study abroad.

× When I needed to contact your company in the States, there were some Japnese ladies who can speak English and in carged of Japanese market so I often contacted them in Japanese.
✓ When I need to contact your company in the States, there were some Japnese ladies who can speak English and are in charge the of Japanese market so I often contact them in Japanese.

× I was helped a lot for 4 years but unfortunately they were fired their job because COVID made the company's financial situation worse.
✓ I was helped a lot for 4 years, but unfortunately they were fired from their job because COVID made the company's financial situation worse.