Had a bad experience during interview on call

Had a bad experience during interview on call So currently I'm preparing for job interview, I applied for a Junior dev role, and I received call within like 2 hour of applying through mail. Now when I picked the interviewer call then I started stammering very badly (I never stammered like before). needless to say, I wasn't able to even tell the interviewer about my previous experience. I always worried what happen if someday I have o give presentation? This literally scare me.