There are only problems with a bunch of applications that recently decided to use Play Integrity API not with every banking app nor Netflix.

This is the list: https://grapheneos.org/articles/attestation-compatibility-guide#apps-banning-grapheneos

In fact those applications should not work with Lineage unless Play Integrity API is patched/cracked someway in Lineage.

It runs in Lineage? Lineage is certified by Google Play Integrity API (I doubt it)? or Lineage tricks Google Play Integrity API?

the problem here is not the banks or apps, the problem is Google Play Integrity API, which is supposed to enforce to run apps in secured phones and it is used to ban secured ROMs such as GrapheneOS and it allows to run apps on outdated phones without security patches.