This is how I do a reverse image search from my phone or PC

Search is a tough thing to get right, which helps explain Google’s rise to dominance in the industry. Some of its success can be chalked up to a ruthless business strategy, naturally, but it would all be meaningless if people couldn’t find the things they were looking for. Think of it like selling an electric car — putting yours in every dealership on the planet doesn’t matter if your rival’s goes twice as far for the same price.