@PeKi72 Where are you getting the Email and Display Name from? Are they coming from a multi-select Person column? If so, then here's a quick example that might work for you.
For this example, I'm using the following list. We will retrieve the first item and get the Members.

I'm using Get item to retrieve the first item in the list. Then Select to extract out each of the Members and build up the URL within Map. Note that I'm using Text mode (see arrow on screenshot below) so we get a simple array of URLs. The expression used for the Map to build up the URL is below.
concat('https://teams.microsoft.com/api/mt/emea/beta/users/', item()?['Email'], '/profilepicturev2?displayname=', item()?['DisplayName'], '&voidCache=false')

This will give us the following output.
[
"https://teams.microsoft.com/api/mt/emea/beta/users/AdeleV@happywolf.onmicrosoft.com/profilepicturev2?displayname=Adele Vance&voidCache=false",
"https://teams.microsoft.com/api/mt/emea/beta/users/LeeG@happywolf.onmicrosoft.com/profilepicturev2?displayname=Lee Gu&voidCache=false",
"https://teams.microsoft.com/api/mt/emea/beta/users/MeganB@happywolf.onmicrosoft.com/profilepicturev2?displayname=Megan Bowen&voidCache=false"
]

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