Clogged toilet bubbles over!

you still got a blockage ,The "small holes" you are on about is where the water from the tank comes our to flush your system,depending on your system (i dont live in the US) you should have an inspection pit near your house ,open that up and check if that is clear of waste water , I guess you are not savvy with waste systems and you may need to call even a local handyman or plumber to unblock your system.

The flapper in the toilet tank is not sealing properly and water is passing by it flowing out of the flush holes. Check inside the tank and see that the chain from the handle to the flapper is slightly loose. The chain pulls the flapper open for a flush.

Maybe you have calcium build-up in the holes. If you can get into these holes with a very thin screwdriver you may be able to open up the holes and get better water flow.

I think this is supposed to read "now plugged". If you haven't already, clean inside the tank and the hose, bulb, flap, chain or whatever is in there. Don't neglect the hole that actually lets the water fill the bowl. Use a long-handled brush to clean down that hole. Back to the toilet bowl: use a baby bottle brush to clean down those little holes in the bowl. If you feel any obstruction, use a thin wire to try to unplug what's there. If the toilet is still overflowing, none of the above should have cost much. Now you need to call a plumber.