>>44049782 Yes, but you need to get your work out there and curate an audience / client base. Bonus points if you actually put the practice in. (For rigging, look up Himono's live2d tutorials and resources if you want to practice head-turns, for instance. You might want to try it once or twice with the same model and find a comfortable range for you to start from. She also has good tutorials for art)
You're more likely to get clients paying good money if you have the skill to show for it, but there is a market for lower quality rigging and art for prices that are more in a budget tier.
Advertising and getting clients through the Live2D discord server is a good start
It's entirely possible to live off of it! Make sure to have a safety net, though.