I would suggest you to take already rigged characters and animate basic animations like jump, walk or run. And add them to your portfolio. Without any portfolio you will have to rely only on your luck.

Sometimes even nobody can surprise themselves how good they can animate Just some people are very good at feeling the general motion.

So don't wait for opportunities, find yourself and improve.

Post your finished work here on discord, plenty of animators will find some time to comment it.
https://discord.gg/KuCD5WmQ

The Discord server was BinaryCat's but he stopped using Spine unfortunately, but the discord has grown so much! It is still unofficial since it started that way (:
I've been in it since before I became part of the team!

Continue working for free it will take you to the right place, good skills attract money.