If aliens exist ,do they know we are here

If intelligent aliens exist are they looking for us what might they find well they'are  actually here  already any aliens trying to figure out what's happening on earth will have to deal with two big problems the first is the speed of light that's what determines how big of an area signals from earth currently covers so for example we've been transmitting radiowaves fpr around a hundred years which means our radio sphere has a radius of roughly too light years and we've been transmitting 📺 signals for arround 60 years so our tv sphere is little sillilar a light year is a huge distance, so our electromagnetic  big but,it's only 300 thousandth of 1% of the volume of our galaxy so unless aliens live on our galactic doorstep there's just no way for them to have received our signal  but our galactic doorstep  is actually pretty big there are thousands of stars close enough to have theoretically picked up radio

transmission from us and so for we found around 14 that have small probably rocky planets orbiting in the habitable zones of their starswhich means life well may be actually it only means they might be capable of supporting carbon and water-based life like our but in any case the closet potentially habitable planet that we know about is only arround 13 light years away which means if there are intelligent aliens there and they figured how to detect our broadcasts and they are currently enjoying and hit music and tv of 2002 but probablity not that's a hit  where the second problem comes in anything broadcast spreads out as'it gets further from earth that means a signal starting here measured in watts will be roughly a trillion times weaker  by the time it gets to the moon by the time it reaches even the nearest potentially habitable planet hard to distinguish from noise there are other ways aliens might know about us though they might construct a huge optical lens in space or even use a black hole or some other really massive objects as a gravitational lens or they might just do what we do look at a whole bunch of stars and try to catch them darkening as little planets like our pass infront  what would not tell them there's at planets orbiting in the habitable zone of our star which is to say if aliens do exist preety safe they know as much about us as we know about them