555 NOISE BUTTON/ OP AMP

I have this circuit from the image below that I am designing myself. part of this circuit is cut so 2 78xx is present. This circuit is being designed and tested in parts. This part of the circuit has to work basically by amplifying the signal from the electret microphone, as it will also work by sounding a siren sound generated by the 555 when the button is pressed. The part of lm386 is ok, without noise. the problem is when I connect output 3 of the 555 to one end of the button and the other to input 3 of the op amp; the siren sounds very low in the background when I do this. already tried to solve even with transistor and nothing solved. does anyone have any tips on how can i solve this ?.

obs. I've tested it with other buttons, it seems that the buttons continue to drive even in cut

• one possible mitigation is to have the switch also halt the 555s (eg by grounding the reset pin) – Jasen Jan 20 at 4:09
• also add 100nf across the 555 power supply. – Jasen Jan 20 at 4:11
• As you suggested and unfortunately ir Didit work – gabriel Jan 21 at 12:57
• The lm386 is very noisy, even if doing this – gabriel Jan 21 at 12:59