PowerShell script for reading team information

Hi, Melina you can use the below Graph PowerShell script to read teams information to satisfy your needs.

$teams = Get-MgGroup -Filter "resourceProvisioningOptions/Any(x:x eq 'Team')"
foreach ($team in $teams){$teamName = $team.DisplayName
    $teamId = $team.Id
    Write-Host "Team Name: $teamName"
    $GroupOwner = get-mggroupowner -GroupId $teamId| Select AdditionalProperties
    $hashtable = $GroupOwner.AdditionalProperties
    Write-Host "Team Owner: $($hashtable.displayName) `n"
    $channels = Get-MgTeamChannel -TeamId $teamId
    foreach ($channel in $channels) {$channelName = $channel.DisplayName
        Write-Host "Channel Name: $channelName `n"
        $members = Get-MgTeamChannelMember -TeamId $teamId -ChannelId $channel.Id
        foreach ($member in $members) {
            Write-Host "Member: $($member.DisplayName)"
            }
         $messages = Get-MgTeamChannelMessage -TeamId $TeamId -ChannelId $channel.Id
         foreach ($message in $messages) {
             foreach ($attachment in $message.Attachments) {
                    $fileName = $attachment.Name
                    $user = Get-MgUser -UserId $message.From.User.Id
                    Write-Host "File Name: $fileName"
                    Write-Host "Sent by: $($user.DisplayName) `n"            
             }
         }
    }Write-Host "`n`n"
 }

Further more, to get additional information on creating new team, modifying teams, managing channels and more using Graph PowerShell, refer the following blog: https://m365scripts.com/microsoft-teams/top-10-cmdlets-to-manage-teams-using-microsoft-graph-powershell/