How to load more historical bars of custom symbol in metatrader 5?

 
greeting fellow trader, I have made my US dollas index symbol in MT5 and I try to request historical bars from 1980 until present but the requested bars only calculated from 2020 to present. What I need to do to get more historical bars of custom symbol from MT5 server?
 

Look for a data provider that offers such prices and build your custom symbol from that source.

Here is more about this: https://www.mql5.com/en/search#!keyword=custom%20symbol.

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Custom symbol historical data
Custom symbol historical data
  • 2022.08.17
  • www.mql5.com
I have made some custom symbols of my own but data keeps on missing...
Reason: