Chinese course in Tainan, not too expensive

Hi. Was planning to move to Kaohsiung but changed mind, so still staying in Tainan (since 2016). I was learning Chinese by myself from 2016 to 2018, then got very lazy from 2019 to 2020 so just have some basics, but need to improve a lot.

Did anyone here enroll a course in Tainan? University maybe? Looking to get some feedbacks about your experience and maybe some advice. Thx!!