So you’re comfortable with dismissing the idea, supported by thousands of observations, measurements and calculations, that the earth is older than that?
You’ll have to dismiss giant swaths of science to do that.
If you actually study the science that ascribes long ages you’ll quickly see some circular logic and assumptions.
2 quickly come to my mind - the ratio of father/daughter elements when they assume the clock started and also assumptions for what events can alter the accuracy of measuring those element ratios.
Besides if it were as reliable as you assume then other natural clocks [see my link in prior post #48 iirc] would tend to back that up.