If you want to progress you need to have a plan and follow that plan. Consistency is the key here and to get really good at something you need to practise it for a somewhat lengthy period of time ie many years.
Changing the exercises week to week is quite popular and is known as the conjugate method made famous by Louie Simmons. This means you do a basic compound movement but change the variation of the movement..ie squat, box squat, safety bar squat, zercher squats etc. However you still squat each week and you know before hand what exercise you are doing and how that exercise went the last time. An example for deadlifitng would be conventional deads, sumo deads, deads with chains, deads with bands etc...the key is you are still deadlifting not replacing the compound movement with an isolation movement like one arm rows. This is necessary in order to gauge your progress because if you are not pushing the limits and doing more than the last time you are stagnating.

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