How to better participate in class?

I’m in community college and idk why everytime I try to participate in class my hands get all sweaty and my heart starts beating fast so then I end up not participating much as I’d like . But like I was fine in high school. And I’m kind of worried because I’m in community college right now, and like it’s not even that big compared to a uni and the classes are small. I’m scared tho cause when I have to transfer I’m scared it’s gonna get worse 😭. I also want to go into a profession where you talk a lot and have to appear confident. How do I fix this?