Context Advertising on Cardinals

I have been working with the Vinkardan cardinary repair company periodically since 2018.
Directions in advertising companies:
Purchase of Cardinals
Repair of Cardinals
Purchase of spare parts
Advertising focused on the brand company

Together with the owner studied the directions and advantages. After the study of the market and the analysis of competitors, semantics was collected with a selection of key phrases (approximately 1000 key phrases), the collection of minus words, the preparation of ads, the setting of analytics.
At the first stage, the CTR was 12.64%, the cost of the conversion was 120 UAH, with an average check of 6 thousand. by UAH.
Later, the restructuring of the campaigns was carried out: CTR was 17.45%, the cost of the conversion was an average of 90 UAH.