Thanos is a fictional character in the Marvel Cinematic Universe, and his method of operation is centered around collecting the Infinity Stones. According to the Infinity Gauntlet, Thanos believes that the universe is overpopulated and that the only way to balance it is by wiping out half of all life. He achieves this by collecting the Infinity Stones, which grant him immense power.
The Infinity Stones are six powerful gems that, when combined, allow Thanos to manipulate reality. Thanos believes that by collecting these stones, he can bring balance to the universe by wiping out half of all life. He uses the stones to create the Infinity Gauntlet, a powerful artifact that allows him to carry the stones and harness their power.
The evidence does not provide detailed information on how Thanos acquires the Infinity Stones or how he uses them to achieve his goal. However, it does suggest that his ultimate goal is to balance the universe by wiping out half of all life.