Review on 🔌 QIJIE LED Strip Connector Terminal 3 Pin 10mm IP20 Non-Waterproof, Ideal for Dimmable, Dual Color, WS2812, WS2811 Digital Tape Light, Connect Strip to 22~20 Gauge Extension Wire, Pack of 10 by Cesar Danger

Some reviews must have overlooked the need for pliers to close. I also found that the directions that you can use silicone coated strips are wrong and you have to remove about a quarter inch of the strip you are connecting it to. Make sure it's fully inserted on both sides, which you should feel as it goes through the spikes, or see through the top. Be gentle and maybe sacrifice one to learn, but with a little time they become a super clean, fairly quick no-solder solution.