Mmmm i wouldn’t type them in a sequence. Rather quickly ! and then enter.
But I realise, this only makes sense in an azerty layout, where exclamation mark is close to the enter key. It’s then very fast to ! Enter and go back levels.
I agree some solutions below are more elegant
They have sepiasearch to search peertube instances. The drawback is that only specific instances are searchable, because of dubious contents on some instances.
https://sepiasearch.org/search