MySQL abort right after starting - mysql

Question

Like described in the title, mysql stop just after starting, i searched in a lot of topics and every solutions proposed doesn't work for me...
i'm on up to date os x with a fresh install of mysql 8.0 via DMG.
my my_pc.err file in the mysql/data folder indicate this:
2020-05-20T14:43:07.6NZ mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
2020-05-20T14:43:07.693358Z 0 [System] [MY-010116] [Server] /usr/local/mysql/bin/mysqld (mysqld 8.0.20) starting as process 25586
2020-05-20T14:43:07.697083Z 0 [Warning] [MY-010159] [Server] Setting lower_case_table_names=2 because file system for /usr/local/mysql/data/ is case insensitive
2020-05-20T14:43:07.697155Z 0 [ERROR] [MY-010123] [Server] Fatal error: Please read "Security" section of the manual to find out how to run mysqld as root!
2020-05-20T14:43:07.697233Z 0 [ERROR] [MY-010119] [Server] Aborting
2020-05-20T14:43:07.697410Z 0 [System] [MY-010910] [Server] /usr/local/mysql/bin/mysqld: Shutdown complete (mysqld 8.0.20) MySQL Community Server - GPL.
2020-05-20T14:43:07.6NZ mysqld_safe mysqld from pid file /usr/local/mysql/data/MacBook-Pro-de-CanardWc.local.pid ended
2020-05-20T14:43:17.6NZ mysqld_safe Logging to '/usr/local/mysql/data/MacBook-Pro-de-CanardWc.local.err'.
2020-05-20T14:43:17.6NZ mysqld_safe Starting mysqld daemon with databases from /usr/local/mysql/data
It's been now few years that i try to use mysql and never manage to make it working. I tried :
sudo /usr/local/mysql/support-files/mysql.server start, it gave me this :
Starting MySQL . ERROR! The server quit without updating PID file (/usr/local/mysql/data/MacBook-Pro-de-CanardWc.local.pid).
i used chmod on my mysql folder.
i changed my path on bash_profile but mysql and mysqld commands is still not found.
i also tried this:
/usr/local/mysql/bin/mysqladmin --port=8889 -u root shutdown
it responds this:
mysqladmin: connect to server at 'localhost' failed
error: 'Can't connect to local MySQL server through socket '/var/mysql/mysql.sock' (38)'
Check that mysqld is running and that the socket: '/var/mysql/mysql.sock' exists!
ps -ef | grep mysqld gave me this information :
501 22093 549 0 6:52PM ttys004 0:00.00 grep --color=auto --exclude-dir=.bzr --exclude-dir=CVS --exclude-dir=.git --exclude-dir=.hg --exclude-dir=.svn --exclude-dir=.idea --exclude-dir=.tox mysqld
/usr/local/mysql/bin/mysql -h 127.0.0.1 -P 3306 -u root -p
give this:
ERROR 2003 (HY000): Can't connect to MySQL server on '127.0.0.1' (61)
my /var/mysql/mysql.sock is empty
sudo pkill mysqld
doesn't kill the process
did a fresh reinstal using https://coderwall.com/p/os6woq/uninstall-all-those-broken-versions-of-mysql-and-re-install-it-with-brew-on-mac-mavericks but when i do mysql_secure_installation i got this error:
Error: Can't connect to local MySQL server through socket '/tmp/mysql.sock' (2)

Answer 1

After few search, i found out that that i just needed to uninstall it and reinstall it with brew. Pretty sad that the dmg doesn't work but now i can use mysql properly.
Thanks a lot for the time you took to help me <3