you can replace such a connector see https://www.aliexpress.com/item/YX-...0b-402f-9241-fe36d841bbae&transAbTest=ae803_1
doesn't need that much skills.

 

Dont use duct tape.

You can replace it, it uses a .5mm pitch 4pin ffc connectors.

its fricken .5mm so if you can solder that go ahead

 

then you can just give up om your 3ds cause duct tape will not help you out nor wil it fix your connector.
i thought you were looking for repair there is only one way that works.
seems you're joking though so i'm not gonna be able to help you.
and i'm not gonna help you with any other problems if you be this ignorant.
a good enough for this job (about any iron that get's more then 300 degree's celcius is) solder iron goes around for less then 10 bucks you can even get a weller branded version if you'll look for it.

 

Im fricken 15, I own a soldering iron, get a cheapass weller soldering iron.

 

i learned soldering when i was 10, so being 15 and still getting no skills?
ahwell
good hearing it's working, but i wouldn't get too comfortable with it working the way you repaired it.