This July 2023 has added another in a long line of African governments to be overthrown by their militaries. Militaries that, unfortunately, seem to have been trained by US forces.
It's like African Groundhog Day. You get a mineral rich country that is trying to get out of it's colonial obligations and morph into a first world lifestyle when...BOOM!>>>> General Whoever decides to take charge and boot out the "Democratically Elected Government"
It's a story as old as time.
As to the issue of the Nigerian Trans Saharan Pipeline:
The Chinese: https://asia.nikkei.com/Politics/Niger-tensions-threaten-Chinese-projects-as-dam-building-stops