Based on your answers, your Google Ads account is not set up to succeed right now — and that is not your fault.
Nobody teaches business owners these things before they start spending. The platforms make it easy to launch a campaign and nearly impossible to know whether it's set up correctly. So you spend, you wait, nothing happens, and you conclude that Google Ads doesn't work for your business.
It does work. But right now your account is optimizing toward the wrong goal, spending on the wrong searches, and Google has no reliable data to learn from. Every day it runs in this state it's collecting the wrong information — which means the longer it runs without being fixed, the harder the recovery.
The foundation needs to be rebuilt before a single additional peso goes into it. Not tweaked. Rebuilt.