There is a big Issue I have

So I mistakenly came across this developer tools part of my computer which by mistake i ended up deleting entire elements and aspects of this Brave browser by mistake is they anyway I can get them back?

@Magnor,
Can you please clarify how exactly you went about doing this? If you’re referring to the developer tools window:

Any changes made here should be wiped when the page is refreshed, depending on how you went about it.