why do i have two moods ..one being extrovert and the other being super socially awkward

First sorry for my english

Second ..as the title says i dont know why but sometimes and some situations my brain just goes boom and i can think faster and talk with people flawlessly ..like i can really talk with people in that mood and i can think and respond so much faster than usual

But in second mod my mid just shuts down and i can barely think and respond at the same time .. i get super awkward..cant think ..cant talk with people without being streesed out and i cant even think for an answer if someone asked me a question.. i would just stare at thme for like 5-10 sec until something comes in my mind to respond …not like in my first mood which i can do that flawlessly without even thinking

Please did anyone get this situation before??how do i fix this???im like this everyday just switching moods randomly in the day

I just want to be in the first mood ALL THE TIME not embarrass myself sometimes beacuse my mind just wanted to switch things up randomly