Problem to start Mysql – Database Administrators Stack Exchange

I have update my ubuntu by
sudo apt update
sudo apt dist-upgrade.

And my server dont’ run mysql.
When i try to start this:

sudo service mysqld start

I have a error:
Job for mysql.service failed because the control process exited with error code.
See “systemctl status mysql.service” and “journalctl -xe” for details.

command systemctl status mysql.service return this:

Б≈▐ mysql.service - MySQL Community Server
   Loaded: loaded (/lib/systemd/system/mysql.service; enabled; vendor preset: enabled)
  Drop-In: /etc/systemd/system/mysql.service.d
           Б■■Б■─nofile.conf
   Active: failed (Result: exit-code) since Thu 2020-10-29 13:37:24 EET; 14s ago
  Process: 12121 ExecStartPre=/usr/share/mysql/mysql-systemd-start pre (code=exited, status=1/FAILURE)

Oct 29 13:37:24 www.arena-bk.net systemd(1): mysql.service: Service hold-off time over, scheduling restart.
Oct 29 13:37:24 www.arena-bk.net systemd(1): mysql.service: Scheduled restart job, restart counter is at 5.
Oct 29 13:37:24 www.arena-bk.net systemd(1): Stopped MySQL Community Server.
Oct 29 13:37:24 www.arena-bk.net systemd(1): mysql.service: Start request repeated too quickly.
Oct 29 13:37:24 www.arena-bk.net systemd(1): mysql.service: Failed with result 'exit-code'.
Oct 29 13:37:24 www.arena-bk.net systemd(1): Failed to start MySQL Community Server.

in file nofile.conf I have:

(Service)
LimitNOFILE=16384

Please help me!