Stay strong my dude. I've also been feeling down as my stutter has gotten extremely worse now that I'm at home not doing anything and not talking to anyone. Before COVID, I found going out of my comfort zone and speaking to people on a regular basis helps with my confidence and hence, ability to speak better. Now, I have been trying to read out aloud to get used to talking but idk how this will turn out. Hopefully this may help you, stay strong.