Hi i a few questions about install outdated plugins to the latest Flarum version.
1: Can I somehow damage the Flarum installation with an outdated plugin?
By installing it via Composer and activating administration in Flarum. Can I damage the forum or make it inaccessible?
How to behave in this situation, how to proceed so that I can remove such a plugin exactly the commands.
1 I want install outdated plugin in Composer so there is little problem.
What should I enter to let me continue the installation?

a) When I want to uninstall a plugin there is some default command for Composer, or each plugin uses a different one. Of course, I know that each plugin has a different name, so the command will be different.
b) If I uninstall the plugin in the administration, the plugin will still remain in the administration, I understand that, but will this delete the data from the database?
I know that if I want to remove the plugin from the administration, I have to enter the command via composer.
I'll be happy if you write me some improtant commands here if something goes wrong regarding the plugin.
Then I can fix the situation, fix it.
Thanks for your time and help !