SQL Server 2019

1. When running `sp_BlitzIndex` does the result generated is using Query Store data?
Trying to understand if Query Store affects `sp_BlitzIndex` report.
2. `sp_BlitzIndex` has multiple suggestions in its report,
I'm trying to understand what steps should follow `sp_BlitzIndex` to verify the need for such an index.
Should it follow both or one of these two? `sp_BlitzCache`/`sp_BlitzQueryStore`
An example would be the usage of one of the rows -
`603 uses; Impact: 100.0%; Avg query cost: 74.4459`
On paper that looks great, before I copy&paste the TSql of the index, How can I understand which queries exactly would have used the suggested index? (so-called 603 uses).

Kind a lost myself during the index tuning as it feels like every command just redirects to another, not sure where I should stop and act haha.

Ty