first of all calm down, secondly I understand that you have some knowledge about the file hierarchy so you understand something about where the necessary files and executables are, and thirdly you understand English,
here the solution link
please read the answer marked as correct
basically what you need to do is for the mysql service and start it again in a type of modo seguro
then recreate the root user and give him the necessary privileges. once done this you close the connection and start the mysql service normally and you use the root user to start again and with this create the other users.
If you can not with this process, comment on this answer and I'll give it to you to manipulate files but I do not know if it still works, because once I did it.