Advertising for an online perfume store

Tools: Google Ads (Performance Max / Shopping, DSA, Search),
Task: Launch Google Ads from scratch, pass Merchant Center moderation, set up correct purchase tracking, and scale sales without wasting the budget.
Dynamics of results:
1st week after launch (30.06–06.07):
Number of conversions — 5
Cost per conversion — 692 UAH
Revenue — 5,695 UAH
ROAS — 165%
2nd week (07.07–13.07):
Number of conversions — 16
Cost per conversion — 335 UAH
Revenue — 17,358 UAH
ROAS — 324%
For comparison, current results (27.10–02.11):
Number of conversions — 100
Cost per conversion — 290 UAH
Revenue — 158,350 UAH
ROAS — 543%
Compared to the first week after launch:
the number of conversions increased 20 times;
the cost per conversion decreased more than 2 times;
revenue increased by 27+ times;
ROAS consistently exceeds the starting values.