Let me tell you about my house fly

Flies around the lamp all day ,sits on my picture of istabraq at night( bit early in the year for house flies?) andive a Big spider who sits behind the telly I think?.. do I squat the fly ,kill the spider ? No because I’m not god (who ever he ,she or it is) then people tell me it’s dirty,.... ... oh on Saturday I saw a couple of yellow wagtails in the fields ...and that’s life