Best Practices When Using Fonts

You should always use variable fonts since they’re supported in most browsers (except Internet Explorer) with a global usage of ~92%
Always use WOFF 2 since it has the highest compression
Self-host your fonts if you want browser caching, and fine-grained control
Take advantage of font subsets, but also don’t overdo it — you might think you only want English, but there might be cases where you * have to use diacritics from other languages
Your goal shouldn’t be size, but to deliver the best user experience by finding balance, and understanding the trade-offs”