Can't Start Mysql As Root

i made a mistake in adding password to the root account not i can't start it as root but can as user, the error is:
ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)
the mistake was i wrote the root@localhost without single qoutes, i also tried with --skip-grant-tables and --no-defaults but the result is:
ysql: unknown option '--no-defaults'
ysql: unknown option '--skip-grant-tables'