In reply to Trishan Mehta.

Hi Trishan! I'm sorry to hear you struggled to select nested blocks. To address this, the Gutenberg team has been working on enhancing the user experience with improvements such as the List View:
https://make.wordpress.org/core/2021/06/09/core-editor-improvement-improve-your-workflow-with-list-view/
It was first introduced in Gutenberg 10.7 and will be included in core in WordPress 5.8. Please let us hear your feedback on it :)