Audible shagging noises - no
Shrieking kids (in happiness or not) - also no
Not complaining earlier about shagging is a bit dumb as now looks like you are doing tit-for-tat
Please though - kids make noise, they have fun, they are out later and longer now summer is here - all great. However please stop the absolutely unnecessary shrillness/shouting/screaming - it is infuriating when you are WFH (or not)