Challenging myself but ...

Challenging myself but ... Guys, so I'm all for challenging yourself and facing your fears wrt speaking but I hate how shrill and shaky my voice sounds in those moments. It's like I'm literally exuding fear/cowardice. As a man, i hate it soo much that i sound soo scared when speaking. Any tips on how to slow down the anxiety and overwhelming fear and build some damn confidence? Sometimes I feel, God nerfed me and didn't equip me with a strong mind to overcome it.