Edward78
There's no need to delete all your posts. Just so you know, tho, to delete a topic you started, you have to use the button "Reply". There's a Delete option under that. You would have to do that for each topic you want to delete.
To delete just one post, there's a triple dot menu under each post you have written next to Reply Like. That has a Delete option.
We understand English may not be your first language, and you're new here. Thanks for making an effort to be a good forum member 🙂