Never be hasty... make sure you backup of the mysql and all files as both together are the shop 🙂
In your hosting account you should have phpmyadmin, [depending with who you host and your control panel] change a field properties is scary first time, but when you have done it a few times its OK, but again be relaxed and double check before you press enter.
Adminer is a great tool to do this if your hosting has not phpmyadmin, it's free and very reliable!
In the logs you also see folders missing, just create them then they are there for next update.
But you must check you are using PHP v7.2 and check other required settings, you can do that with a script found here upload it in your hosting account and browse to it, it will give you a check if the environment is perfect for the shop, this is very important and avoid errors in future upgrades.
Let me know if this helps.
www.yourdomain/psphppinfo.php
psphpinfo.php