Downloading PowerShell ISE 7.x

There is no PowerShell 7 support for ISE, only for 5. (See https://learn.microsoft.com/en-us/answers/questions/306631/powershell-7-ise-not-visible-in-windows-10.html) You should consider using Visual Studio Code, it does have an ISE look-and-feel option. (Check my this part blog post about why you should use Visual Code Code over ISE, https://powershellisfun.com/2022/04/29/po/#switch-back-to-powershell-ise-look-and-feel)