If you do less one day, Anki gives you those cards the next day on top of the normal workload of that day. There is no way out.
Worst, the less you retain, the more mistakes you make, the more your workload goes up. Anki algorithm never do the "lower workload because this person does not retain" decision. Instead, it will just give you more and more work in such case.
If you're finding that you reliably do not recall some card Anki will eventually mark it as a leech. Those cards get suspended automatically after some number of lapses. That will reduce your workload because suspended cards are't part of your workload.
> If you keep failing that card, Anki will continue to alert you about the leech periodically. These warnings occur at half the initial leech threshold. For example, if you set the warning at 8 lapses, future warnings will happen every 4 lapses (at 12, 16, and so on).
Suspend means you never see the card again. So how could you keep failing it after it's been suspended for being a leech?
If it becomes leech, it will be ignored entirely by anki.
All of that is too much expertise about how to mark cards instead of allowing you to do it intuitively.
The only bit missing is some algorithm deciding how often to introduce new cards based on your historical data.