i dont really know bro, probably discord or omegle if you want to speak to strangers. For now my only practise is trying to speak in front of the mirror, or read outload to myself or someone else(friend or family member), and try to be mindful of my tongue placing when im speaking, i think it helps me a lot with blocks. I feel you bro i always thought about how many girls i could have dated if i didn't have this problem, but im confident we will succeed!