Fix this:
LoRa.print((char*)pachet);
by replacing with this:
LoRa.write((char*)pachet, sizeof(pachet));
But that is the least of your problems.
Fix this:
LoRa.print((char*)pachet);
by replacing with this:
LoRa.write((char*)pachet, sizeof(pachet));
But that is the least of your problems.