These are not free money accounts, as one has to spend the 380 to get the 380 credits.
Instead of that churn & burn US$350 threshold Google Ads accounts.
Run CPA, affiliate marketing campaigns. If Google Ads detects the landing page (website) as malicious, then try some other website (landing page) template. Even a simple basic website, landing page template, (but well made) is good enough to have conversions through Google Ads. Avoid complicated complex website landing pages, as the codings in them are nowadays detected as malicious by Google Ads algorithms.