@E_Briannica do you know of an idiom database that includes examples from all languages (not just English), or any attempts to compile them for all languages?
@mandatory Hi! No I don't. The closest I can think of is a book called Dictionary of Proverbs by Delfin Carbonell Bassett that has idioms in English and Spanish. Idiom dictionaries between English and another language are pretty common, but are not really compiled together except for listicles. The eggcorn database shows how people mis-hear English idioms: https://eggcorns.lascribe.net/ Snowclones aren't quite idioms but memey English phrases with room for variables: https://snowclones.org/. (Hope you're doing well, please don't use these for evil.)
The Eggcorn Database

@E_Briannica evil is tough to define :) but I will try my best, thank you. Hope you're doing well too! Your knowledge of language is second to none. Looks like I have lots of interesting reading to do!