Please correct me if am doing wrong (NodeMCU ESP8266, MAX4466 and WS2812B)

I have a few questions as I am completely newbie in this.

A single 5V 2.1A is being injected to NodeMCU ESP8266, MAX4466 and WS2812B (71 Nos), whether the given supply is safe for each module.
Issue: Strip flickers (first 1 or 2 led) before it turns on to orange.

No resistors / capacitors being used.

I am planning to change supply to 5V 5A (as my strip requires 4.26A)

Using this diag.
I´m new here please point me to the right direction.

You already listed the answer… Add a resistor and a capacitor.

Or add a level shifter and capacitor.