You can choose
1. you have enough free time
a) invest a minimum of real money (All-Inclusive Plus Chest)
and devote many days and years to playing BDM - after five years you can be among the top 1000
b) invest a lot of real money (if you don't need it)
and spend many days playing BDM - after a year you can be in the top 1000
2. you have little free time
forget about BDM, it is primarily a huge time waster that can be invested much more effectively in life - you will become a winner over Pearl Abyss Corp. and its BDM game, which 90% only offers mindless destruction of everything that moves, even trees, even though BDM is quite successful from an aesthetic point of view