The answer to a toilet not working is that there can be several common causes, such as a clogged toilet, a broken flush mechanism, or a problem with the water supply. Symptoms may include the toilet not flushing properly, water not refilling the tank, or the toilet continuously running.
Some potential solutions you can try yourself include plunging the toilet to clear a clog, checking the flapper and flush mechanism for any issues, and ensuring the water supply to the toilet is turned on and functioning properly. However, if the problem persists or you're not comfortable addressing it yourself, it's best to call a professional plumber who can properly diagnose and fix the issue.