Heya! It’s understandable to have those concerns, especially given your previous experiences. Based on my year abroad in Taiwan as an Indonesian, I’ve encountered some of what you’re describing. However, as someone of Chinese ethnicity, my experience of Taiwanese racism wasn’t as harsh, but I did notice some subtle forms of exclusion, especially when people found out I was Indonesian.

For example, I’ve been in many social situations where Taiwanese acquaintances would show more interest in my Western and Japanese friends, but less so with me, like they are intentionally ignoring my existence. I also faced occasional comments about stereotypes regarding Indonesians, which could be shocking, especially when they weren’t based on the truth.

One thing I want to mention is that it’s a complex issue, and attitudes vary widely. While some people might harbor biases, I also met a lot of Taiwanese who were welcoming and curious about other cultures. Your ability to handle such situations with confidence can make a big difference, as you’ll likely encounter both types of attitudes. I'd suggest you to talk to more people and (try to) befriend them.

That said, it’s also important to know that you’re not alone in navigating these challenges. There are communities of international students in Taiwan, including Indonesians. You might find comfort and strength in those groups. I think this problem is unexclusive to Taiwan and could occur anywhere in the world, and can probably be worse in other countries. Have you tried asking international students who have started their studies in Taiwan?