Cracking/Creaking noise when pedalling hard or standing on a pedal So my 1 month old bike started making a creaking/cracking noise when I pedal hard or stand on a pedal. For example if I only pedal hard on one side and just let the other side spin its fine but as soon as i paddle with both sides it creaks on every stroke.
Since I'm short on tools I've only tried new pedals, taking of the cranks and put them back on with grease, took the chain of and just stood on one pedal then switched to the other one and the noise still appeared. Took out of seat post and checked every bolt/axle/quick release on the bike except the BB. It seems to be a sealed shimano cartridge so is there a way to &quot;fix&quot; it, do I buy a new one since while I'm already at it or can it be something else?
It´s a Fuji Nevada 1.9 29 2021

From what I can tell its threaded, looks similar to this one:
Where did you buy it? I'm guessing that your local bike store, unless they were the place where you purchased it, probably has little if any interest in working on the bike, unless you are willing to pay a good amount.
I looked at the specs on this bike and the crank/bottom bracket is not precisely described. Pictures would be helpful, but if the bottom bracket has cups that attach it-- the manufacturer only seems to sell that kind-- my guess would be, you need to remove the cups, put some anti-seize compound on the threads, and torque them down properly.
I had a creak like this on my bike, which was assembled in Taiwan, and upon disassembly, found the BB cups were barely lubricated with a minuscule amount of some all-purpose grease. I put in a proper amount of anti-seize compound, reassembled to spec, and all was well, no more creak.