There should be a drain valve where you can hook up a hose and then open the valve to drain.
The drain from the washer to the main line is getting plugged and the floor drain is easier. Drain cleaner in the floor drain should take care of it.
Rodd the drain.
A bidet is a toilet that sprays water for cleansing.
I would say that if water had never backed up in your floor drain, then backed up even after you had the drain line snaked, Roto-Rooter didn't do their job. Once a drain line is cleaned, it should drain like it did before the stoppage. As for plugging the floor drain, it is there for a reason, I would not plug it. There are several items manufactured that will allow a floor drain to drain but if the line starts stopping up they will seal the drain off to prevent water from coming out of the drain.
your kitchen drain and floor drain are on same line, and needs to be snaked
The toilet flange is usually above the floor level. You would have to cut it off the drain pipe and cap it. How you do this depends on what type of pipe the drain is made of. Even if the drain should be below the floor level, you have to seal the drain or sewer gas will come up from the drain.
The main drain is plugged. Not completely, but enough that it is easier for the upstairs water to come out in the shower and floor drain instead of going out the drain.
The evaporator drain allows condensation from the ac unit to drain. When the drain clogs up water will go into the passenger floor instead.
If you have some Baking Soda and Vinegar, this can be used to unclog a drain. If the drain is really backed up, you could use a wire hanger to unclog it. Simply bend the wire hanger into a hook thin rod with a hook at the end and use it to push and scrape debris out of the drain.
There is no drain on an AC condenser it is a closed pressurised system. To drain it you have to hook up a machine that sucks the freon out.
its not easy but if you can locate your main drain pipe and its below your basement floor then saw cut up the floor and attach the floor drain to the trap and then tie on to the main line using the same pipe or adapters. If you have no main drain under your basement floor then you will need to saw cut a hole for a sump pump pit or basin and install the sump pump to your main drain line which has to be installed so your sump pump line runs higher then your main line before wyeing to the main line. then cut up the floor to where u want your floor drain and run the drain to your sump pump basin . Some states want a vent on your floor drain and on your sump basin so I would check what your local codes are.