I don't know if anyone else has this problem but I have a really pacific issue. In general just I suck at talking. I find it hard to put my thoughts to words, I never know what words to use and I never know what to say.
I talk like xQc irl and the act of using words to hard I'm always slurring them out even tho I try not to and I have a stutter and a slip so saying thing is very hard.
I got a job as a door to door salesman for a year and by the end of it I felt like talking in a way that was both fluid and engaging was my superpower. This is after having such crippling social anxiety that I would often run home and hide. It may be an impractical suggestion, but I would advise you find a structured way to practice where the goal isn't just talking for its own sake.