Drake’s Equation- the number of technically advanced sentient beings in other words is a function of infinitely unknown variables that either predicts untold millions of such, or, none. Take your time, pick wisely. If any variable is zero..like maybe evolution..
It takes more religion to believe in little green men than in a loving Creator.....
So with all the billions of planets orbiting billions of stars in this galaxy with billions of observable galaxies, better odds are we’re alone?