Arduino Nano V3 only runs sketch correctly after hitting reset or starting serial monitor

[Whandall]

What is the output in the failing case?

If the BME's can not be found, but are found after a reset,
what happens if you try to init them a second time?

You could add an i2c scan function to the sketch.

All this:

@ramimehyar

#include <nRF24L01.h>
#include <printf.h>
#include <RF24.h>
#include <RF24_config.h>
#include <SPI.h>

can be replaced by

#include <printf.h>
#include <RF24.h>

and, because you don't use printDetails() even by

#include <RF24.h>

I glanced over your sketch and very much dislike its while structuring,
the blockiest thing I've seen for a long time.
A state machine should work much better.

The duplicate BME initializations deserve a function.

The whole sketch needs a clean-up and an auto-format.