Who invented the words "consciousness" "reality" "fundamental" that you are now using? you are using language invented elsewhere while claiming you can't be sure of its reality.

Are you also claiming you can't be sure someone had to create and raise you to get to the point of asking such questions? We are downstream from parents and society.

The whole discussion here is anchored on individual level, but we are not viable outside society. It's like extracting one cell from one organ and saying it is mysterious why it is like that, while ignoring the organism and the evolution.

If society fails, human die too. If a human makes a fatal mistake, the cells in their body die too. We depend on top level doing its job to keep the lower layers viable.