u/Curtis-McGurtis

I have low water pressure/volume in the bathtub of my kids bathroom. It's the closest faucet to the water heater. I replaced the shower valve and I think it helped a bit but I believe the cartridge started getting clogged and the pressure/volume of water went back down. That was about a year and a half ago.
Put in a new faucet on the sink today. Pressure/ volume went down quickly, I took out the aerator, and there was debris in it. Ran water into a bucket and debris in bucket. (Never had a problem with that sink before or any other fixtures in the house just fyi.) does this sound like sediment coming from the water heater or can copper pipes degrade? Not sure why it's only affected the one bathroom would it be because the water heater is closest to that bathroom? If it is the water heater can I drain it to get the debris/mineral deposits out? Change out anode? I believe it's about 6 years old and never been drained. Been in this house for about 2 and a half years. It's a gas rheem if that matters. Bought another cartridge today but don't wanna put it in and it immediately get clogged at $80 a pop... any insight would be greatly appreciated