How to hide the Modify this view and Create View as per users available in groups

This is possible, but only through permission levels, not UI hiding or JSON formatting.

To control who can see Create View / Modify View / Modify This View, assign permission levels like this:

• Give Managers a permission level that includes Manage Lists (e.g., Design or Edit or Full Control permission levels). They can create and modify public views.
• Give non‑managers a permission level that does NOT include Manage Lists (e.g., Contribute permission level ). They cannot modify public views, but they can create personal views.
• Remove the “Edit” permission level from non‑managers. Because Edit includes Manage Lists, which would allow them to change public views.

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