How to access the SSRS and save a report to a local folder as pdf,excel formats using Powershell

Im super new to ssrs and powershell and i would like to save the report to my local as multiple formats like excel,pdf etc using powershell.Anyone please help me achieve this.Thanks in Advance.

I have tried using New-webserviceproxy but it is not supported in latest powershell versions and i would like to know the other way around for doing that..

Also Tried New-RsWebserviceProxy but it internally uses New-WebserviceProxy so that it doesnt work.Can you please help me through this..?