One counterintuitive tactic that worked was cutting the budget from high-traffic keywords and moving it into long-tail, low-volume searches. As a result, overall traffic dropped by more than half, but conversions went up about 2X within two months.
This happened because of intent. Broad keywords like "marketing agency" ate up spend fast and brought in people who weren't ready to buy. Long-tail searches like "Google Ads for electricians" or "SEO for small service businesses" had less volume, but the clicks were of much higher quality. Consequently, CPC dropped around 30%, CAC went down, and profit per lead went up.
This strategy carried over into organic search as well. Those same long-tail phrases were turned into landing pages and blog posts, and they started to rank over time. This brought in steady organic traffic while keeping paid spend under control, and results kept compounding instead of stalling.
It worked because most people chase volume. I focused on intent and quality. As a result, I got fewer leads on paper, but they were better clients, and stronger returns showed up quickly.