Low balance increases with normal HR

Would like a solution but I don't expect anything at all.  Over the last month the balance increases of ETH are sub-par, for my rig (RTX 3060 12 GB) and even much worse many times even though my HR is always normal (low 20s) for me anytime I look at it.  I remember people calling this out a while back but I can confirm, the mining here has gone down hill lately.  I ran it for about 9 hrs today, got an hourly rate of about 75% of my par prior to December.  There has been times in Dec that my rate has be 50% of par or less. Maybe because of fewer miners during the holidays?  I admit, I don't mine that much lately but...its because I don't get much bang for my buck anymore!  Love to hear an explanation on this, no mining for a while I do believe.