The expiry of the C-4 visa in Seoul South Korea will be transferred in a tourist visa

I have a question regarding my current work visa in Seoul in South Korea. I am African-American and I currently have a C-4 work visa that will expire next week. I would like to know if I do not have an employer to renew or re-apply for a C-4 visa to stay longer, can I apply for a visa for another country and simply return to Korea? South with a 90-day tourist visa to stay longer? until I can get the necessary documents to leave and apply for a new work visa if I decide to stay and work in Korea.

Thank you,
I would appreciate any advice