How Much Should I Give to My Bride and Groom?

I have a question for you all which I feel like is pretty relevant in general not even just as a plus one what do you think of like gifting etiquette how are you usually measuring out or deciding what to gift the bride and groom. For this wedding like I just get cash 100 150 bucks and like that I think for like other weddings like for like my like friends wedding that I went to part of his registry was just hey like contribute to our house fund so I just gave like 100 150 bucks for that  - it's easier for me because I'm a terrible gift giver but yeah no I'm certainly not any not someone that you should take gift giving advice from.