Teach me how to have a casual conversation.

Hi all! So I have been struggling communicating since my stroke in 2021. I can't seem to have a casual conversation. 1. Because every other word that comes out of my mouth is 'f*ck' (I am not angry, it is a filler word that is stuck on my tongue) and 2. Because I can't seem to catch on to the conversation, or think of anything to say in the moment due to my processing speed being slower than everyone else's! So I just want to learn how to have a natural, not forced, conversation. Small talk. ANYTHING. because I am so tired of being awkward. When I used to be able to just talk and talk. And now, I hardly ever speak to anyone. And it is affecting my relationship. NOTE: I did speech therapy for 2 years after my stroke but it got to the point where I was so focused on my filler words that I wouldn't be able to speak at all. And now, I just don't talk.