I think he's worst than every here except swordfighter
Coming from a Zelda main who jumps on different characters every week, who thinks Dr Mario goes even with Rosalina, who thinks Lucina goes 60:40 against Pac-Man, who thinks every character you used in the past is mid tier.
You haven't gave reasons as to why he's 2nd worst in the game.And saying you 'used' to main someone isn't good because you have to put time and effort to really see if someone is good or not especially MK who requires precision and reaction time, you have a 'main' for less than a week.
Got members on the board who solo main MK and frequently place high in tournaments and one of them managed to take a game off Boss
Few reliable kill moves that are safe, opponents fall out of up b sometimes.
Little range
Low damage output
Light weight
Easily comboed
Laggy moves
He just has too many weaknesses over strengths
First one is simply you not being good at using SL, if you hit say for example Mario after the first hit you PULL BACK so the second hit connects. This proves you don't try to learn.
Mario has low range but his mobility allows him to get in and give chase. MK being 9th in dash speed and has better air mobility than Lucina and 6 jumps should spell it out easily.
Mach tornado does 23% fresh, F-Smash does a lot of damage as well as SL. He can rack up damage just as good as Sheik and kill better.
Lightweight. Its legit can't say nothing about this.
Well stop using laggy moves for starters, don't use dair into ground, don't fair unless its after DA and down throw, don't nair on stage or bair. And never use jab....
Dtilt,F-Smash,Ftilt,D-Smash,U-Smash don't have that much end lag if anything some have no end lag at all. Marth and Lucina have atrocious lag on all their normals besides Dtilt and yet MK is worse.kmt
Edit: If you can't follow up out of DA or down throw. Drop him. If you can't play MK without using laggy moves.Drop him. If you lose frequently to Little Mac.Drop him. If you can't string uairs Mega drop him. If you can't do basic kill setups. Throw him in the bin.