You can buy LC terminations that don’t need a splice. You just strip the end of the end of the fiber, cleave it to the correct length, put it into the LC thing, and lock it into place. I have no clue how good the connection actually is. A full kit with cleaver, power meter, laser illuminator, and some odds and ends was about $100 on Amazon/AliExpress, and the LC ends are a couple bucks each.

I only did this for a short run of 1Gbit, and I have no actual background in fiber.

Most likely yes. I’d be very upset and confused if it didn’t work. Make sure your cable is at least cat 5e (6 is fine) .