Check 1: Can you name the ad that produced your last lead?
If not, your tracking is decoration. Pixel, conversion events and call tracking must connect each enquiry to the campaign, ad set and creative that caused it — verified with a real test enquiry, not assumed.
Check 2: Are you optimising for the right event?
Platforms optimise brilliantly toward whatever you tell them. Tell them "page views" and you will get world-class page views. Optimise for completed enquiries and the algorithm hunts for buyers instead.
Check 3: Do your reports show cost per result?
Reach, impressions and clicks are weather reports. Cost per lead and cost per sale are the climate. If your weekly report does not lead with them, you are flying on instruments that do not include altitude.
Only after all three checks pass does more budget make sense — because then every increase buys more of what already works.