I NEED HELP!!

Okay so am 13 going into 8th grade and I can’t read some words that 8th graders can usually read. I try to read a lot but some words are just really difficult for me. Even simple ones. I need help because when I get chosen to read out loud am scared of not reading it right and am scared that people are gunna laugh because I CAN’T read. If you know any website that can help me please comment them. Thank you and have a nice day.