The first makes sense. The second is wrong grammar. Nobody would say "for" in this kind of sentence, it's just the wrong word. Note also, they both misspell the word "bottom".

Hey Antonio! First of all, the correct spelling is "button." "Button of the remote control" refers to a physical button that is part of the remote control itself. "Button for the remote control" is not a common phrase. It might be used in a specific context, such as referring to a replacement button or a button that is used to operate the remote control indirectly (e.g., a voice command button). However, in most cases, "button of the remote control" is the more natural and accurate phrase. 💡 If you need to practice English everyday, follow me and take the quizzes I share.