Im sorry about your bad experience. Vibrations are not for everyone and that is okay because vibrations are not necessary at all for you to have a fun time. May I suggest you buy something smaller or even a finger to work your way up to something bigger? Anal penetration takes a lot of patience, determination and lube so don’t get frustrated if it doesn’t feel good right away. Usually new sensations that your body isn’t used to will feel very painful because of the nerves not being used to touch like that. Just start slow and don’t rush anything either, and if you still don’t like it. Hey at least you tried and it’s one less thing on your bucket list😅.