I can't get the wires soldered to the pins. They just don't stick

Is it possible to solder this ribbon cable back together? This is a PSP-450 Camera. : r/soldering

When soldering, the solder doesn't stick to the iron. It just falls and forms a globule. What should I do? - Quora

First time trying to solder wires to headers. I know it's bad lol. Any tips to give? : r/soldering

Low Voltage Wire Connectors Solid Connection, T Tap Wire Connectors, T Type 2 Pins Wire Splice Connectors, Solderless No Stripping 3 Way Wire Connector for LED Strip, Automotive Fits 24-20 AWG 12 Pack

soldering - How do I solder that? The solder won't stick - Electrical Engineering Stack Exchange

How To Connect or Splice Wires Together - 10 Methods

ROCK SOLID CONNECTION - Brightfour low voltage wire connector solves the problem that many connectors become loose because of the varying temperatures

Low Voltage Wire Connectors Solid Connection, T Tap Wire Connectors, T Type 2 Pins Wire Splice Connectors, Solderless No Stripping 3 Way Wire

815 best r/soldering images on Pholder

11 Pieces 3 Pin LED Strip Connectors Tunable 10 mm LED Strip Light Connectors LED Strip Connector Terminal for WS2811 WS2812B SK6812 LED Strip No Soldering: : Tools & Home Improvement

Solder doesn't stick. : r/soldering