Turn on the headlights and try to start the engine. If the headlights dim when the starter is turned on, then the battery is most likely dead. This trouble can be easily overcome by starting the engine from another battery, for example, from your friend's car (see below).
A. Check the reliability of contact of high-voltage wires with candles. Push wire caps tighter over spark plugs - 4-cylinder engine
B. Check high voltage wires for good contact with ignition coil - 4-cylinder engine
C. Check ignition coil electrical connector - 4-cylinder engine
D. Turn off the ignition and check the air flow sensor connector is good and secure
E. Check the reliability of the fastening of the tips of the wires on the battery terminals (the battery is in the luggage compartment)
With the ignition off, check the electrical connectors for soundness and if they are suspected to be damp, spray them with a water-absorbing spray like WD40