I'm trying to add two custom emojis to my bot's message. To add the custom emoji, I may have to buy discord nitro/prime to use it in other servers if I'm not mistaken. Is there any way to use my custom emojis without having to spend any money?

I was thinking if it was possible to read an image from my computer files and then turn it into a custom reaction for my bot to use. So far, I have no code because I don't really know how to work with Pillow and Image Editing in Python/Discord.py