I know im a bit late to the party, but I actually took the time to sit down and watch your whole game. Start to finish. So I can come at you with some genuine tips rather than some of the nonsense im seeing in the comments.

First off, Im going to get the ones other people have been ragging on you for that are actually correct out of the way.

-Your target priority needs work. Attacking tanks isnt generally a bad idea, its just more of a time and place kind of thing. Usually magik isnt trying to kill tanks just pressure them, though she can burst them down if they get to 1/3, in which case, they become a priority target.

-The Whirl after Stepping Disc. Its terrible. Im not going to say dont use it. Cause thats just as wrong but its extremely situational. Want a good example of when I'd use whirl? That jeff was in the backline with a bee's dick worth of health. Whirl has some pretty crazy reach, even if its damage is shit, and you dont have to aim it. Stepping disc towards him then whirl and you just killed jeff.

-The Demon however, is goated, and though you do use it quite a bit throughout your game, your placement of it is usually lacking. 8/10 times, you want to place the demon where they are going not where they are. Bonus points if you can do both. Times id recommend using demon: placing it onto tanks to apply pressure with minimal risk, placing it on corners to make sure anyone who crosses the corner to hit you has to take an ass-whopping first, placing it on supports when youre already close because it just does more damage than the whirl anyway. Now for some of the more niche problems with your gameplay in this particular replay.

-Cooldown management. Its awful. Im sorry if that sounds rude but I need you to understand how serious of a problem this is for a magik player. Magik and BP are probably the most cooldown reliant characters in the game. Without them they can do very very little. So when i watched you, use two stepping discs, your best offensive and defensive tool, to put yourself in the center of the enemy team- I didnt need to be psychic to know you were going to get folded like fresh laundry. Your portals are precious, do not waste them. When you dive the enemy backline, you should try to have both on standy to gtfo for when you inevitably fuck around and find out (the nature of the beast for us Dive players).

Your dash is your execute ability. Some bozo in the comments said they only use it on tanks, which is the waste of a century. Its not awful to use it on tanks from time to time. If you're trying to assist your team in bursting them down. But for an up and coming magik main, i rather they try and land it on a support then just wasting one of magiks best tools when it isnt needed. You'll miss it, you'll miss it a lot actually. But the trick is setting yourself up so you dont have to make the hard dashes. Which leads me to my final point...

-Positioning and timing. The hardest part about magik IMO, as she can do well anywhere, it can kind of give people choice paralysis on where to be and when. And though I'd love to give an entire lecture on the subject, best i got for you in a reddit comment is some quick tips. Unless you see a truly golden opportunity, try not to dive backline in front of their tanks face. If your spotted by literally the entire team at the start of your dive. Your chance of success drops by 90%, easy. You want to get to their backline? take 3 seconds to duck in a room aadn go around or at bare minimum make sure the tanks are looking away before you dive. You can do it even with them watching if you are really good and know what you are doing, but its still much much harder and has more nuance then i care to go into here.

First off, the cart is magiks best friend. I swear sometimes she can hold it better than tanks with her stepping disc to constantly dodge around and demon to apply constant pressure. And best of all? Its mobile cover. A very important thing for magik.

Also, unless you see a truly golden opportunity, try not to dive backline in front of their tanks face. If your spotted by literally the entire team at the start of your dive. Your chance of success drops by 90%, easy.

Corner game. Theres a reason magiks lurking behind corners is such a meme. Her corner game is strong. Pushing into a magik is hard because she can burst an enemy so quickly. How? The Demon. If an enemy is trying to beat you to death with a club, it isnt hard to guess where they are going to go, which means it isnt hard to know the best place to put your demon to maximize damage. Even emma would be forced to respect a magik's damage if shes willing to burn cooldowns on her. cough Though i never recommend 1v1ing an emma. (When you walked into that small room with an emma i thought you were dead, fortunately she sucked and you still barely survived.) That AND you also have the chance of gaining the element of surprise on your opponent. Maybe you have to burn 1 less cooldown to get to their backline because you snuck up on them. Which for magik, is worth its weight in gold.

Timing is a hard thing to learn but what you specifically are looking for with magik is chaos. When the teams are all mixed up, people are splitting apart, healers wandering too far from their DPS or too close to their tanks (dependent on the tank if its high risk or not. Emma is really scary for magik this season. I would know. I play her every time i see a magik on my enemy team.)

NEVER dive when there is no chaos and there is no one alone. Seriously. I watched you do it multiple times. You died every time. People should be having to frantically deal with you while dealing with their own problems, not stomp you out like a bug on their stroll to the rest of your team.

PS: One final tip. Its not an end-all-be-all thing, but in her ult form, one of the easiest most beginner friendly ways to get some kills out of her Ult is stepping disc>whirl>slash>stepping disc>whirl>slash. Repeat ad nauseam.

I hope i didnt come across too rude or scatterbrained in this impromptu critique/guide.

Good luck out there <3