👍🎉💖😂✅🙃🙂😔🤔🧐🫠💪🙀😑🫪

My most-used chat app is Discord, and that one has custom emojis.
These are my most frequently used "emojis" there:

I think the main problem is that they get stripped from their context? So it becomes unclear whether an emoji is used in earnest or whether it is used sarcastically or ironically.

The custom emojis do add a bit of a personal touch though