Most P traps and waste elbows allow enough play to make them work. But if alignment is to far out and you don't want to go but in and make corrections they do make flexible tailpieces that should work. If it's your supply fittings they make a varity of different length supply lines.
You should see professional plumbing drain help when your drains seemed to clogged and any time of declogger is simply not working. You should contact a plumber.
Hanzel Plumbing & Drain Cleaning
Mike Plumbing & Drain Service
No it should be an indirect waste properly vented and trapped
You should use a plumbing snake to clear a clog.
Plumbing Repair Sink Drain Houston TX
HY-Pro Plumbing & Drain Cleaning Of Guelph
Plumbing drain vents equalize the pressure in drain piping in order to preserve trap seals on plumbing fixtures. Blocked or improperly sized vents can cause traps to dry allowing sewer gases to enter the building.
Hydrogen peroxide will not damage your plumbing, so you are free to pour it down the drain.
A fernco or rubber fitting. This made of rubber and had hose clamps on it. You should ask for assistance at a hardware or plumbing shop for a 2" Plastic X 2" Copper Fernco or rubber coupling.
Bathroom or kitchen should be square and level. The plumbing drain lines need slope to drain properly.
Yes