Hi Michele! In addition to @uk1000’s excellent points, I might suggest you brand yourself as a niche provider - if not in this gig, then maybe in a second one, just to broaden your chances.
Rather than architectural drawings/renderings as a whole, think about a specific project someone might come to Fiverr for. Off the top of my head, I think about apartment complexes. Here in the US, there is a lot of turmoil about renting, thanks to Covid. When the “dust settles” I think a lot of apartment complexes are going to want to rebrand and freshen up their look to attract new renters, and that includes nice layouts of all their different apartments for a brochure, website, etc. Imagine if I own an apartment complex, come on fiverr, type “apartment layout creators” and BAM - there you are, right there to hire, and you hardly have any competition on the page, unlike broad architectural renderings. You see what I mean?