Unlikely - even if you get a piece of art from TurboSquid that is suitable (which is really hard, btw - I’ve trawled TS for years and found barely anything that’s truly usable), it would probably still need so much work that it would be more cost effective to just get it made from scratch for $1-3k.
There isn’t really a good answer for solo devs or those without a massive budget (and no art team) who also want to provide art that doesn’t look like it was made in 1995 (which of course, is required to even have the merest shot at your game selling at all… if you don’t have quality art your game won’t even be looked at, much less purchased).
I’m not sure what the answer is besides possibly working full time while living out of a car, and spending all your income on tiny bits of contract art (which as people have mentioned, presents its own problem in terms of consistency between art pieces, if different contractors are used), which for obvious reasons, is not practical.
Crowdfunding is an option, but as mentioned, even for just a few characters, you’re talking about tens of thousands of dollars. For any full game, that’s going to mean an astronomical funding goal, that, for an unknown developer, is essentially 100% impossible. Which doesn’t even get into how you get funding for your art if you don’t have pretty art to get funding…
Also from what I recall there are some metrics that show that crowdfunding projects that are from a solo developer almost never get funded. But again, that presents the problem of having an art team, and then the problem of getting an art team on board, without any art to show off the game.