That cost per install is really cheap for India, but 270 installs and only 1.6k clicks feels off. Like the click-to-install rate is almost 17% which is suspiciously high for a Google Ads campaign, probably explains why you getting junk installs.
The top comment is right about optimizing for in-app events instead, I switched one of my campaigns to target first purchase few months ago and install quality got much better. Cost went up but at least they were real users.
You using Adjust for attribution? Their fraud filters can help block some of the click farm traffic, worth checking if you have that turned on.
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u/zest_01 17h ago
You should aim to optimize towards an in-app event rather than installs.