My Mac isn't macing anymore

Please help😭😭my exams are coming very soon I downloaded 2.1.2 version of oclp in my mid 2012 Mac catalina everything went fine and I upgraded it to sequaila 15.2.something I saw a new version of oclp came out and I downloaded it and ran post boot patcher and saw graphic something was remaining and ran it The moment I did and it completed and restarted everything went down to shit i can't even open my Mac It is asking for username and password but I can't type in password A popup suggested me to go into recovery and it got into internet recovery mode taking half and hour I tried many things but it still at the end get stuck at that username and password screen Please help