How can I beat up my anxiety ?

It takes a lot of time, introspection and reflection.

I find what you state in this post to be common for many people in your age range that I have come across. And to a large degree, I blame it on the inception of the internet and social media.

See, while you are connected to family, friends, followers, etcetera, there's really nothing social about the internet platform. You do not really develop social skills because you interact more with words on a screen than the sound of voices in an ongoing conversation or face to face interaction.

So, when you are faced with public speaking you really have no previous experience to serve as an example to follow.

Have you ever heard of EMDR therapy? It is used by psychologists to treat patients with traumatic stress disorders. But it can also work with anxiety. Look it up as well as how to determine which one of your eyes is your dominant eye. And when you do, message me and I'll give you an exercise used with me after my accident in 2017 that you can use and practice to help relax you.

~ tough love ~

the only way is to keep doing it as much as possible & improve through trial & error

Drugs

The way I learned to do public speaking was to tell myself I'm an actor, I'm not me, I have a message to deliver and it's a role I'm playing. It works for me.

I want to beat up my anxiety too! Let me know when you find out.
Last night, I had another anxiety attack and it was scary.

Befriend.. make piece w/ yr anxiety.

It's the norm in life.

So, don't rage against it.

Utilize it.

Start with talking to yourself(maybe in mirror), then with close friends, then go for closed groups. Then..

Punch it in the gut with deep breathing, make it submit with meditation.

Yeah, drugs. Not always worth it though.