Dream About Zombie Attack College

I was at my college and i was sort of in trouble for not doing something correctly. I was behind the bar in my classroom (i do hospitality) and my dad was there (he works with us as a helper) and i was just watching everyone else set up the tables. We had no customers so some of my classmates sat down and the others were serving them but it was sort of like robots or a simulation. My dad was speaking to me saying that they didnt even serve him or something. My classmates were lining up at the door to take turns to get served. I said to my dad that i was gonna go have a shower and that my tutor better not yell at me when i come back. So i went to the changing room and i took a shower but i didnt actually. I came out the changing room with a "friend" and there was other girls too but they seemed quite strange. They went towards a different way than i needed to so i followed them. They went forward and suddenly we were at some sort of crossing when i got stopped and sent back because i wasnt allowed to pass, i asked why but the lady just said that there could be an assembly. So i walked back to my classroom to my dad behind the bar. My classmates were all dancing in partners and my tutor was being strict with it. I thought she was gonna force me to join in and yell at me but she didnt. Yet again i left the classroom but this time i didn't say anything. I went back into the changing room and went towards where the girls went last time. There was no one guarding so i just went through. There was a road and i walked until there was 2 roads leading different ways. I went right and the houses and cars and the whole place was wrecked. I walked around a found a shop that i love going to in other countries but the building was all rusty and broken down. Zombies were everywhere. Zombies were following me and even in cars. Zombie children on scooters. But not living happily. More like creepily limping around with dirty clothes waiting creepily for a human to arrive so they could attack. I started running on the road but zombies in cars were after me. I was bitten but i didnt turn. I ran back to my college and into my course. My tutor saw me and wanted to speak to me. She suddenly turned into a zombie and said something like shes waiting for this forever im not too sure. We both turned and went into the changing room where some other zombie things were in seperate showers doing tasks while on the wall of the showers. I honestly have no clue where this dream came from but it scared me so bad.