Samus vs Young Link
Matchup Tips and Strategies
When playing as Samus against Young Link, focus on avoiding his kill confirms by staying out of range of his forward smash and close-up up special. Engage in projectile exchanges only when you have a fully charged neutral B, as Young Link's fire arrows can negate your missiles. Use your up B out of shield to punish his landing dair, and carefully time your up air to win trades against it. Additionally, take advantage of the bomb's explosion timing by throwing Young Link just before it detonates, and use heat-seeking missiles for edge guarding, as they can limit his recovery options.
Tips for Samus vs Young Link
You need to capitalize on the fact that Young Link needs very specific confirms to kill. Things like fair or up b very close to the blast zone, or a f-smash call out. If you avoid these you're fine.
You won't win the projectile war unless you have a fully charged neutral B. This is because his fire arrows will cancel your missiles. This is why you shouldn't approach this way.
Young Link bombs will cancel any charge of neutral B, so make sure you shoot where you won't collide with them.
If you expect a landing dair, call out with an up b out of shield.
With a certain timing, your up air will actually win a trade against a Young Link dair.