I did not say you did, I said projectmanager did, which was why his posts were hidden, not because of the content as your inflammatory post said.
Most of them are fine (in this respect) as you clicked the reply button for specific posts by other people. This is shown in your posts, and readers can even click the “replied to” avatar to jump back up to that specific post that you replied to.
Occasionally you just replied to the previous post, so no harm there.
Once however, you actually replied to yourself, which might not make much sense to new users, but you were actually pointing at one of your posts that was hidden. So it does make sense, in that you were speaking of what the “replied to” was pointing at.
It all looks like this is not a problem. Ie, it looks like it is clear who you are replying to, when you are replying.
Sometimes you had just made posts that were to the general audience, and this is fine as well.
You might learn to leverage the hilighted quote reply. (Instructions are given in the Welcome to SketchUp Community thread, Replying section.)
You repeatedly make mention of not knowing how to use Discourse forums well yet, or being new here.
Each new user receives a private message from the system on how to do the basics. It should still be in your PMs. (Access via the envelope icon on your avatar menu, top right of screen.) Here is a tip topic that gives a link:
Checking your badges,
it shows that you have not received the “Read Guidelines” badge as yet.
(I find this ironic that an attorney would not have read the rules.) 