Weird Mysql Access denied 1045 error

My navicat shows 1045 error Access denied for user 'root'@'localhost' (using password: YES) when I try to connect to the database

This has actually happened before but I solved it by modifying the my.ini configuration file to skip password verification, then changing the root user's password and logging in again

And there's nothing important in my database so I was like whatever xD

This happened again today so I tried to solve it with same way but failed

I skipped writing a lot of silly trial and error steps and jump directly to the steps that work.

So I use "mysqld --console" to view the output error log

It turns out that a process is occupying port 3306

Duh.

Then I used this command "netstat -ano | findstr :3306" in cmd to see which process was occupying port 3306 and note down its PID

Then the one occupying port 3306 happens to be Mysql.

WTF?

 I terminated the process with PID 6700 and restarted the MySQL service. The service started successfully and access was not denied when the correct password was entered.

Since MySQL was started at the beginning, why would it deny access when the correct password was entered T . T

btw the version of my Mysql is 8.0.32