If you are on Studio version, than you should also have access to The Dialogue Separator, which was added for this reason.
"The Dialogue Separator uses DaVinci Neural Engine AI to give you individual control over the level of dialogue, background sounds, and “ambience,” the reverberant field or ambient room sound".
So perhaps before you try to recreate anything, try to preserve what is there. It should sound more natural, unless you have some crazy stuff you need to remove from audio track.
There is a bunch of audio stuff tools they added in new version.
There are no best universally usable reverb settings for room distance, its a matter of taste, and perception. Specific thing you want to convey in your story.
You can try echo filter if Dialogue Separator is not enough.
Otherwise, I would recommend you try to dial it to taste in a way that is appropriate for the video. So the audience doesn't feel disconnected. You wouldn't put grand canyon echo if you are looking a video of someone in a room.
There are also third party solutions that are very good and copy of echo and playing it where it needs to go. Which is another thing that is sometimes done.
Like Accentize Chameleon.
https://www.accentize.com/chameleon/