It used to be far, far easier to get in, but demand now is through the roof. At least the lottery means bots don't snap up all the tickets and if you win the tickets are cheap. My grandparents went all the time during the 80s and 90s and we have a closet full of masters hats and chairs as evidence.

If you don't win the lottery there are tour packages where you get guaranteed tickets. Expensive, but not really beyond what superbowl, world series or other really big events can cost.

https://www.yourgolftravel.com/tournaments/the-masters-2022