I started like this as well.
Well, I am building a different kind of the game, closer to RTS. Started with free and quite average models.
I discovered that AI may actually generate pretty good assets. I used two services. One is likely useless for you as it is for animations…

Castle LanesCastle Lanes: build on your lane, your armies marchA builder-autobattler in the spirit of classic RTS custom maps. Three factions, an authoritative server, four-seat lobby with computer players.
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