Just to reinforce the comment above, no, very incorrect.
But now I’ve discovered that there is an RFM69 variant, I’ll be more explicit.
This is what I recommend people who want to learn to code a LoRaWAN device buy:
It is fully supported by LMIC 4.1 and by the very detailed, comphrehensive LMIC-node:
If you use LMIC-node & VS Code with PlatformIO there is a lot of help to be had on here. You can also use any of the other boards supported by LMIC-node.
Anything else your results will vary.
For clairity, the Pico is not suitable as a starter device.