The reason the bullet vibrator is universally the easiest and most reliable vibrator is because it is literally designed for the clit. It’s small size and smooth tip keeps the buzz focused but easily moveable to find the right spot for you.
However, this isn’t restrictive and still allows you to get creative with where you can also use it - nipples, inner thighs, etc.
The best bullet vibrators are so subtle you could leave them on a table and none would be the wiser.
There are plenty of reasons to add one to your sex toy collection (or make it your main vibe; you do you).