This app was mentioned in 7 comments, with an average of 0.86 upvotes
https://play.google.com/store/apps/details?id=com.simejikeyboard
This is the best keyboard I could find for free。
Facemoji Emoji Keyboard is a Free, Customized Keyboard for Android! with 3600+ Emoji, emoticons, GIFs, stickers on this Emoji keyboard, Facemoji Emoji Keyboard helps you to spice up chats in Facebook, Twitter, Instagram, WhatsApp, etc.��Facemoji Emoji Keyboard provides thousands of cool keyboard themes for you to download-You can even add your own photos to the keyboard!
Android version for anyone looking
aight its an app with different fonts here
https://play.google.com/store/apps/details?id=com.simejikeyboard
Have the flag you want