FEELING self lost

Actually today I have an interview for internship and I was so dumb that firstly at starting of interview i said good morning , then good afternoon than good evening though interview is at night. Feeling so embarrassing. Then the que asked by interviewer I felt so embareesed as i feel I am dumb .even he said that what I am asking, what are you ans., Are you sure your ans is appropriate. Don't you know powerpoint.though he is righe but this just fell my self confidence so badly that what can I say . Even my net was not working properly and he also said the same.also i my apprensce was not good.oh krishna will i able to anything in my life prabhu. I felt like I'm a dumbest person. Even In previous group interview i wasn't able to speak even fluently and when the person asked me to say my option I asked him if I can give conclusion and the conclusion I give was so dumb and out of format that what can I say. I am feeling like lost . No one can say that I'm the one who used to score good in school , and by seeing my college mates too rising , I'm feeling that I'm worthless ever anyone can find. 🥺🥺🥺🥺🥺🥺🥺