Changing data directory for mysql(mariadb)

I want to shift my mysql default data directory from /var/lib/mysql to a folder in my home folder, because the databases I will be creating will be over 100Gb, and my root folder is on a 32 Gb SSD. Could anyone please give me proper detailed steps on how to accomplish this. I tried to do this once following some blog online and it messed up my whole mysql installation(I had to reinstall everything).

I hope this aint counting as necromancy.
I found this thread but I also found the solution, so if anyone stumble into the same issues.
Here the basics:
If you do not use the default location, just put into /etc/mysql/my.conf (or whereever your conf is):
datadir=/path/to/datadir
Otherwise, it will always default to /var/lib/mysql (maybe this will change)
Have a nice day,
lufti.

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