How do you start running when you cannot run for two minutes?

Use a walk-run structure rather than trying to run continuously. A common progression is one minute of easy running and two minutes of walking, repeated for twenty minutes, three times a week, extending the running interval every week or two. Two rules matter more than the specific plan. Run the running portions slowly enough to breathe through your nose or hold a sentence. And increase total weekly volume gradually — most beginner injuries come from adding distance too quickly rather than from running itself. Shoes matter less than people spend on them.