Powershell help with loop

Hello,
I need help with Powershell loop...
I have the following code, which checks the MacAddress input,
I want to put it in a loop so that if the value doesn't meet the pattern, the user should be prompted to enter again the value.

Secondly , this is a part of a longer code, how can I make the same logic on the whole code?
That means, at the end user is asked if he's fine with entries, should it continue, if not repeat the whole process....
Thanks

$MacAddress = Read-Host -Prompt "Enter MacAddress in Format (6 Sets) XX:XX:XX:XX:XX:XX - "

#Function to Validate MacAddress
#Functions
 function Check-Mac ($MacAddress) {
 $Value=$MacAddress -match „^[0-9A-F]{2}:[0-9A-F]{2}:[0-9A-F]{2}:[0-9A-F]{2}:[0-9A-F]{2}:[0-9A-F]{2}$“
return $Value
 }
 function Repair-Mac ($MacAddress) {
 $Value=$MacAddress.Replace(„/“,““).Replace(„.“,““).Replace(“ „,““).Replace(„,“,““).Replace(„;“,““).Replace(„\“,““).Replace(„:“,““).Replace(„-„,““)
 $Value=$Value.Insert(2,“:“).Insert(5,“:“).Insert(8,“:“).Insert(11,“:“).Insert(14,“:“)
return $Value
 }
 #Magic and Result
 
 if (!(Check-Mac $MacAddress)){
 $MacAddress=Repair-Mac $MacAddress
 
 if (!(Check-Mac $MacAddress)){
 Write-Host „Mac is wrong“ -ForegroundColor Red
 }
 
 else {
 Write-Host „MacAddress is good“ -ForegroundColor Green
 }
 }

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