Javelins are quite ingenious. They zoom UP into the sky and then drop down on a tank from above - where the armor is thinner.
Also, the Bayraktar TB2 drones from Turkey have already been redefining armored warfare. The Turks used them to halt a combined Russian/Syrian armored advance into NW Syria a year or two ago, and the Azerbaijanis used Turkish drones to knock out Armenian tanks and artillery in Nagorno-Karabach.
Stupidity and corruption do not win wars. Putin's casualties, Ukrainian civilians and Russian conscripts, are growing. He can't hide the truth of his evil from the Russian public for much longer. Kyiv will be the ultimate battle. If he can't take Kyiv, his own military and spy services will force him out. He started an absolutely senseless war with Ukraine, but he'll end up destroying Russia. His name will be reviled in Russia for generations.