Why ethereum is going down so much?

I have ethereum but now i am confused what should i do because ethereum is continously going to down now if i sell it i will in loss and if i hold it will down more now i m confused sell these ethereum or hold any one which is expert in cryptocurrency what should i do , i m already in loss but if it going to down more than i will sell it give m idea plzzzzzzzz i am n trouble 😑😑