Do yourself a huge favor and look up F-Droid. It’s a third-party app store, and it’s amazing. All of the apps are completely free (though some do have in-app purchases), and many of them are open source. Unlike the default Google Play store, F-Droid is not monetized and is supported by grants and donations.
One of the apps you can find on F-Droid is Mitch, which is an unofficial Android itch.io app. I use it and I like it. It can be a bit finicky, but it does work pretty well.