AUDACITY - Tips and Tricks

Agreed @Monty Cash Music   - Audacity does not have a straightforward  Reverb function, specially because you can only hear it after you apply it. Your method looks good to me, and duplicating tracks and per track play with amounts of reverb is certainly a good tactic.
Recording in a specific spaces (kitchens, bathrooms, hallways) for special effects can also be cool, but than it is intentional. Close miking is the best way to leave your options open for the mix stage.
I always have liked the reverbs and echoes that Ennio Morricone used. In this article there is some mention of layered reverbs used by Morricone for his Spaghetti Western soundtracks
https://theproaudiofiles.com/reverb-mistakes/

Here is the link to the audacity Reverb settings. https://manual.audacityteam.org/man/reverb.html

@oorlab I checked out the article, it gives a some great tips I will have to experiment more with later. I suppose one thing that Audacity does force us to do is to pay more attention to our sound, because if it is all done nicely for us by a fancy DAW then we don't really think about these things.

Usually, you can get a lot done by using a plugin that does what you want. Making a sound/vocal 'thicker' can be done in a variety of ways and with a variety of results. The Haas effect is one, as is reverbing it, but also stereo widening may help, or justifying the sound you recorded.

If you are willing to spend a bit on it, I could recommend EZMix, which offers a great lot of easy-to-use filters that oftentimes do the trick for you. There are expansion sets that especially cater for vocals. In my songs, I often like to tweek a setting that was often used in Motown recordings, just because I like the quality it gives to it. But there are other ways to work on the feel and make it fit to your taste.

You might want to try some of these free ones:

https://www.meldaproduction.com/effects/free

@Pleudoniem Thanks for the suggestions. I will check out those plugins.