Now you can set the number of historical bars to search for a level. This will avoid getting random levels. Also, you can set a limit on the number of lines on the chart. The old levels will be deleted and will not bother you.
It should be noted that this algorithm is difficult to use on small timeframes due to the limited capabilities of the Pine Script. We can reference a maximum of 5000 historical bars in cycles. Also, the script may receive an error due to a long calculation. Therefore, do not ask too much of the algorithm on small timeframes.