In addition to the good comments made so far (especially yours of “cash cows”), may I suggest you ask your managing agent to email you say
” a copy of the cash payments journal for 1/01/21 to 1/12/21″. This is a 1 minute job for him to organise.
This accounting document lists ALL payments (not just cash) made by the strata; when they were made; to whom were they made and why they were made.
A review of that document by you should fill in the blanks and help you take the matter to the next step.