ATS - formula for day trading

My every formula is failing. Attempting to build an ATS; using formula like in a paper trade. Trading on a single index, on day trading basis.

On close when I see transaction logs - I see spikes (noise) is killing any profit and forcing me in red.

As usual, buying on uptrend and selling in down.

Now questions:

a) Any suggestion how to avoid noise/spikes?
b) Any good yet lean book which gives formula for a day trading. I saw some pivotel (H+L+C)/3 formula, but need more.

Honestly, I am left with no energy/time to read long textual contents, just trying to spot simple 3-4 formulas to give a try.

Please suggest.
 
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