@Roelant Heya, on my Linux machine I use the Compose Key (which I have mapped to Caps Lock).
So ¹ is Caps Lock + ^ + 1, ² is Caps Lock + ^ + 2, etc.
There’s so much more you can do with the Compose Key. I wrote a bit about it a few years ago at https://ar.al/2018/07/18/typographical-typing-habits-for-linux/