This forum cares little about the types of plagiarism because it prohibits any form of such act. Maybe this can be useful in the academic field and not here.

It is becoming clearer that you used Chatgpt to make this post because there is no relationship between the message and the forum. The consequence of plagiarism on this forum is not academic failure but a permanent ban. You are correct that it can also damage the reputation of culprits.  

No amount of plagiarism is accepted on the forum. In the academic environment, there are levels of percentage that are accepted.

You don't need to check for plagiarism because you already know that you have copied someone else work. Checking for plagiarism is applicable in the academic environment.

The only way to avoid plagiarism is to be creative and always reference the source of your information.