The Red 'X' Button/ Quit Safari

Device:

MacBook Air M2, Monterey 12.6

Issue:

the safari won't re-open the last tab/web (always bring me to the start page) every time I re-open (no force quit) safari.

why:

since the day I use Mac (MacBook Air 2017 i5) every time I press the red 'x' button or 'quit' button. the safari will close, and show the dot underneath the safari logo. if I re-open safari the safari will open, and bring me back and show every tabs & website from the last activities.

however, if, I force quit or quit safari(command q). then, the safari will close completely (no dot underneath the logo) and if I open it. it bring me to start page.

resolve:

1. safari > preference > general > "safari opens with" > "all window from last session"
2. system preference > general > "close window when quitting an app"
3. went to Apple Genius Bar
4. 2x online chat with apple support
5. 2x calling with apple support + screen share

I've been trying to resolve using that method + restart the computer + restart to factory setting.

still doesn't work

Question:

1. how do I get back to the previous setting (red 'x' button, reopen, bring to last web/ tab of activity)
2. is this a 'new feature' in MacOS Monterey?