I Ejaculated long time ago and i didn't know that my prayers won't be accepted till GHUSL

**Hello everyone, please help me! I Ejaculated long time ago and i didn't know that my prayers won't be accepted till GHUSL till i saw some posts about it. should i re-offer all the prayers i missed before (i prayed all of them) after doing ghusl or i can just continue? because i'm 14 years old and i'm still learning.. i didn't know... also i ejaculated a really long time ago, like i prayed more than 50 sallat and i didn't do ghusl or anything. please help me in this hard situation.**