I’m trying to find a bedrock texture pack for minecraft java edition 1.12.2 i can’t find on the internet please answer what you have found
What in specific are you looking for? There's no such thing as a Bedrock texture pack for Java because then it'd automatically be a Java pack and not a Bedrock pack. You're kinda just being confusing at that point.
If you're looking for a port of a specific Bedrock Edition pack for Java then chances are it doesn't exist. Particularly if it's something that's on the Marketplace. Most of those packs are made specifically for profit and so don't have Java equivalents that are given out for free.
And if NONE of that is close to what you mean then please be more specific in what you're looking for.