2005 honda civic trouble cranking?

I have a 2005 honda civic that has been costing me so much money and never getting fixed

It takes a very long time to crank up I have to try atleast 3 times before it starts then it will randomly lose power for example when I go from reverse to drive or when I'm accelerating normally.

Things I've done so far.

-Fuel pump
-02 sensor
-Spark plugs
-Crankshaft sensor
-Cam sensor
-New Battery

TIA =)

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