Support Resistance helping to trade less losing

I tried many indicators Support & Resistant and there are many indicators and it is difficult to understand and use.
My friend shared a script, maybe useful to the traders. Please copy and add to Pine Script and Add to Chart in section bottom.
Source code shared at: docs.google.com/document/d/182HemDvhbfcxJj7FZbADD08E9AIUzzS7TM3YGwUxTZk/edit?usp=sharing

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