MS 365 at win 10

Last year bough from Microsoft "MS 365 "what would be renewed at October 25. Got laptop what is not
upgradeable to win 11 .
MS stated at web that I (may) still receiving ESU by next year after renewed -but I try understand MS language.
"Would I still receive any security updates (as usually) what allow to safe use my laptop or safety is only limited to MS 365 ? "
Maybe ...The other way- is to use any " free "antivirus program and not pay for subscribe MS 365.