GCP Credits exhausted just in few BigQuery Queries - Getting list of Dependents

I was exploring the BigQuery Dataset, but I noticed I was charged 25,000 INR (the Entire 300$ Credits have been exhausted) just for 3 to 5 queries. I can't even explore GCP now because the credits have been exhausted. May I know why I was charged so much just for 3 to 5 queries?

These were my queries

```
SELECT *
FROM `bigquery-public-data.deps_dev_v1.Dependents`
WHERE name = "s3transfer" AND DependentIsHighestReleaseWithResolution = true AND MinimumDepth = 1
LIMIT 1000;
```

```
SELECT *
FROM `bigquery-public-data.deps_dev_v1.Dependents`
WHERE name = "hawk-scanner"
LIMIT 2;
```

This is shocking for me, I want to get Dependents list, which is not available via deps.dev API

Can someone please tell me why this happened, and how I could do this properly?