Rcan you try using a regular blink-sketch for your IR LED, just to verify if you have it physically wired & powered in a way that the board can turn it on/off at all?
Rok, so now you've verified that your LED works, your camera can record it, and that your wiring allows the MCU board to turn it on & off. ... that's progress.
Rjust means you know several things are working, so you can add "small steps" to get from what you have working now, to having your whole project working 
RRok, and where is the code that you just used to make your LED blink?
Rty...checking constructor format for that lib now...
Rcan you check in your Library Manager in ArduinoIDE to find the version # of your IRremote library please?
Rawesome to hear it worked for you!
Rare you using a single board to encode, send, receive & decode the signal all at once?
Rlikely the send code & receive code are interfering with each other on the board.
Rit will probably be best for continuing troubleshooting to use separate boards for the sender & receiver.
Rdid you pay special attention to the code & wiring from the wokwi he linked?
Ridk, have seen neither your wiring nor your code, so you're the only one who has access to enough information to make comparisons. ... But if it's working in the wokwi (ring/strip makes no difference with neopixels), then either your real-life version doesn't match the wokwi, or you failed to power the neopixel strip from its own power supply (because neopixels suck too much current to safely run more than maybe 3-4 from an arduino board's power).
Ryeah, I just always recommend an external power supply for basically everything anymore... the vast majority of the time, new users are having large #s of issues due to not understanding that arduino boards can't be used as "fonts of unlimited power"