Man sorry this happened to you. I online game and go on discord a lot. When people point out my "uuums" and I also cant say "L" words (I really hang onto the L and hold it to the point of LLLLLL-eon) So I tell em, "Yeah yeah, i got a stutter so what?" They usuallly understand after that. A lot of people mock you because they don't understand. They don't realize this a battle you face everyday of your life. Make em understand. After i tell people, i get way more comfortable. It brings my anxiety down and i get more fluent. Add me on discord DarkComet if you wanna chat and build more confidence