To learn more about this topic search for “Antenna Polarisation” where you will find to obtain the lowest path loss the two antennas should have the same polarisation. (read that to mean the same orientation).
You will find the loss between the transmit and receive antenna will have the function of the cosine of the angle between the two. So if one is vertical and the other is horizontal the angle is 90 degrees and the receive signal should be zero. Now, you will find there is some receive signal but this is coming from reflections and since this another topic to learn about I won’t go any further.
Simple rule: Since LoraWan gateways have a vertical antenna then its best if the node has the same.