Up throw up air and drillshine up smash are your bread and butter kills on yoshi. Bair is good for edgeguarding, but you have to be mindful of their double jump. If you know they have used it, be ready for the air dodge as well. Yoshi likes to come down with aerials when they are recovering, and generally in ways you're not used to. Up tilt is really good against him too. I like to bait an aerial and up tilt because it usually leads to uair/bair. At really low percents, you can up tilt yoshi multiple times in a row. If they don't ban FD, I go there every time. No platforms takes away a ton of his movement options/tricks. I like to laser a lot against him too. Yoshi gets destroyed by fox, you just have to play really smart and safe if you're not used to his weird movement. It's also common to miss a lot of techs against Yoshi since his combos are really different. You have to be careful because his down smash is so fast and strong, you will get punished hard for it. If you watch Colbol vs amsa game 3 on FD, he plays a textbook game.
