A boss has not dropped the item after nine attempts, so the tenth feels due. That intuition only fits some game systems. If each eligible attempt is independent and the probability stays the same, previous misses do not improve the next attempt’s odds.
A small fictional example
Suppose an item has a 10% chance on each independent eligible attempt. The chance of missing it ten times is 0.9 raised to the tenth power, about 34.9%. The chance of at least one drop across those ten attempts is therefore about 65.1%, not 100%.
These numbers describe an invented system, not a particular game’s drop table. A real game may use pity counters, guaranteed rewards, conditional eligibility, shared loot or changing probabilities. Find the developer’s current explanation for the exact mode and version before applying the example.
Check what counts as an attempt
A completed run may not create an eligible roll for the item you want. Difficulty, quest state, loot ownership or another condition may matter. Record those conditions before concluding that a published rate is wrong.
A personal log can help track attempts, but a small sample does not establish the true rate. Ten unlucky runs are possible under many ordinary systems. Conversely, receiving an item quickly does not prove that a method increases the odds.
Set a time or spending boundary before repeated attempts. Do not treat earlier effort as a reason you must continue until the drop arrives, and do not assume a paid chance is an investment that will repay persistence.
The useful question is not “How many misses mean I deserve it?” It is “What are the actual rules, what uncertainty remains, and how much time do I want to spend on this activity?”