I think this would work, give it a try :)
$groupname = "Bannedusers"
$usersingroup = get-group $groupname | get-adgroupmember
$userlist = foreach ($user in $usersingroup){
$userproperty = get-aduser $user -properties * | Select-Object Name, PasswordLastSet | Where PasswordLastSet -LT (Get-Date).AddDays(-90)
$userproperty
}
$userlist
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If it does, please accept the answer and upvote, please do comment if something seems a bit off.