Erl to irl

ERL to IRL

So I been studying how price moves from external to interal liquidity. My first question is the relationship between timeframes. For example if on a higher timeframe price is moving to external liquidity but on a lower timeframe price is reaching for a FVG? My next question is that does the IRL be a FVG that has been tap into already or does it have to be a fresh untested FVG? Also, is price more likely to draw to a htf fvg after sweeping liquidity on a lower timeframe? Also, If I don’t see a fvg form on the higher timeframes then do I wait for a fvg to form or use a ltf one?