Hi, Yuna. Allow me (a psychologist) to chip in:

Anxiety is a common issue that people face. It can be overwhelming and you may feel like you're helpless over what you're facing.

However, anxiety is actually useful for us. Anxiety helps to keep us safe. For example, you aren't open with others about your problems - because there is a real risk that the information will be used against you.

With the right tools, anxiety can be well managed. You'd want to learn how to differentiate when is a good time to be more guarded (e.g. when crossing a busy street), or when it can be a good time to be more open and relaxed (e.g. talking about your interests with a really good friend).

A skilled therapist will be able to assist with that. You may look up Cognitive Behavioral Therapy (CBT) and how it can help you.

I note that you want to solve this on your own. Most people generally want to solve it on their own, until they can't. That's when they seek professional help. It doesn't have to reach that stage. In fact, the earlier you get help, the much easier it is for you to manage. I would've gone for therapy sooner if I knew how helpful it could've been!

Getting professional help isn't difficult, and isn't really scary. But I think for most people, it's the first time jitters that they have to first overcome. Considering that you're in uni, most unis offer free or very cheap services at their counseling department.

My suggestion: perhaps give it a go, and see if it helps? You might even enjoy it

All the best!