I want one classic Project with multiple Scrum and Kanban boards (each for Project Sub-Teams)

[Sundus Ayub]

I want one classic Project with multiple Scrum and Kanban boards (each for Project Sub-Teams). Are there any settings to keep each board Tickets (issues) to their board only without reflecting it on any other board of the project?

[Nic Brough -Adaptavist-]

No.

Boards are not containers for issues, they are a view.  There's no way to arbitrarily say "because an issue is selected by board X, it should not show on Y even when Y explicitly selects for it".

To have a board not display issues that are on other boards, you will need to set up the board filters so that they are exclusive - i.e. they don't select for the issues you don't want to see on them.