Toilet bowl gurgles after flushing cycle

Of course ALL the DIY centers (Lowes, Home Depot, Ace Hardware, Do-It-Best, etc.) sell toilet repair kits. Sounds like you need a flapper replaced in your toilet. Search online for toilet flapper replacement to get guide on DIY.

That's an interesting one! Does the flush valve close properly so the tank can refill? Does the float valve allow the tank to refill fully, to near the top of the overflow? That can be adjusted, if it doesn't.

Check fhe flush valve - you may have an obstruction under it. Also check the water port from the bowl side - feel up inside the port for obstructions or buildup of hard water deposits.

WASH YOUR HANDS THOROUGHLY afterwards.

flush valve has obstruction and tank is not filling all the way to just below overflow tube.

Hello. Your toilet is leaking through the flush valve. This is a serious issue as it will use a huge amount of water every day. Check to be sure there is not an obstruction in the tank and if you can not find one, call the plumber. J.

You are describing a couple of possible problems, neither of which have super easy solutions.
The worst case senario is that there is a crack in the passageway the water travels when it is flushed and just happens to be at a spot that allows the leaky water to go into the floor drain and not on the floor. This is most likely to happen in a brand new toilet situation in which case you take the bowl back to where it was purchased and exchange it.

The most likely scenario however is that there is some form of material caught in the passageway and is "wicking" the water out of the bowl. As water in the bowl disappears from view when you flush, it travels uphill for a moment....over a hump..and then down to continue its journey to the sewer drain. When a piece of material is caught laying over that hump with one end in the bowl water and the other end hanging in empty space, it will draw the water out of the bowl "wick" just like a wick in an oil lamp sucks the oil up through it so the flame continues to burn the oil and not the wick.
Often times just using a plunger vigorously, after a flush and the bowl has refilled, for a couple of minutes will help get the pesky piece over the hump. Otherwise only a special toilet snake (most often called a closet auger) will solve this issue. If you need to get this auger, Do NOT think if it costs more then it must be better. They can range up to $35 or more. You should be able to get this tool, that hopefully you will never have to use again, for between $10 to $15

Most likely, you do not have a good seal on the flapper valve at the bottom of the tank. To confirm, try this:
Turn off water and flush toilet. Then lift up the flapper valve and put a light coating of vaseline on the mating surface where it contacts the toilet tank when closed.
Turn water back on and see if it continues misbehaving. If that fixes it, it was a bad seal. Usually that is all it takes.

There is usually a small tube on the top of the ballcock or the fill valve in the toilet tank. The tube should be clipped to the top of the flush valve pipe so that the water will flow into it. Should the small tube become loose and fall off of the clip, the refill water will not make it back into the bowl.

low water in the bowl is only caused by the float being to high! the gurgles is Usually because of air coming back up through the pipe, check your vent pipe that come out the roof. this will help the draining.