Ok, ur link has tech skill, but ur using nair way too much vs fox. Be unpredicitable and nair him if he tries shine combos, but if u have the fox in a grab do a uptilt+downsmash+sword plant etc. combo and dont use UP B too much , even tho Link's UP B is good because the fox can drill shine and it has a lot of punishment. Use the UP B for finishers, but not all the time. Lets say the fox is coming back, go out and nair him, but if u think he'll make it back b4 u can nair him then do down tilt ( down + A) and it'll pop him up, and punish him accordingly, with a sword plant. But since he does a lot of shine combos, the way to counter that is nair or bair, but do a mixture because u used way too much nair and the last thing vs the fox is, use what the creators gave link HIS PROJECTILES : ). I saw u use his boomerang once in a while but U GOTA USE THE BOMB, and dont try arrow unless in some occasions, but u should always have a bomb out while spamming ur boomarang wisely. Try this too for an edgeguard just bommerang out of stage and when fox comes back front tilt cuz it should've turned around with the boomerang. Now for the marth you shouldn't have that much problem. Marth has no projectiles yet Link does, SO USE EM : ) like I said b4, always have a bomb out, and boomerang wisely, try to get some upclose boomerangs for more damage. Marth's recovery is good and bad, but just go out and niar him and edgehog cuz he'll lose his double jump. Versing a good Marth you can do a couple of things to piss that player off. First, the GRAB , DOWNTHROW, UP+B combo works on marth on LOW PERCENTAGES, Second, USE UR PROJECTILES, Third, LINK can combo on Marth so good its not even funny, well i guess it is for the link player, anyways UP TILT Marth a lot and Always , always try to finish him up with a sword plant, because it will work wonders, and Marth dies quickly to sword plants. Now versing Falcon, do the combo's you would normally do to a fast faller, example space animals, and do a lot of up tilt. NOW Falcon doesnt have any projectiles either, so do what i told u with the bomb and boomerang, BASICALLY LINK'S PROJECTILES ARE A MUST FOR A GOOD LINK PLAYER. WATCH OUT FOR FALCON's KNEE, MARTH'S TIP, AND FOX'S UPSMASH/SHINE , some of the counters to these things are, vs fox's shine if u can try to nair him and come back on stage if thats possible, versing marth's tip , DI towards stage and left and vice versa for right, and versing falcon's knee u would DI or smash DI also, like u would to marth's tip. Try not to get urself tipped, knee, or upsmashed, but then again these things are inevitable and probably ur gona get hit, so try to play aggressive, and always do good combo's, use projectiles, and sweet spot to come back. Versing Falcon, just combo him, projectile and if he goes out of stage EDGUARD HIM TO HELL, and one more thing use sword plant to finish up falcon if possible, but falcon just doesnt die UPWARDS too much so left and right is the way to go, and edgeguard him with projectiles, front tilt up + b nair bair, and u should do ok. THE LAST THING I WANA SAY IS WATCH ANIKI VIDEOS, BECAUSE HE IS AMAZING.