Miss having a normal relationship with my wife

It bothers me everyday that I can never just have a normal relationship with my wife her dad stays with us previously her sisters have stayed with us at different times in the last few years we have two kids a third on the way and id love to just go hiking with my wife but not even that can happen it seems like I can never get a time with her where it’s just us weather we are at home or away for so long I just wanted for us to be able to live by our selves as our own little family and it just makes me less and less happy everyday because I feel like we’re never gonna have a home to ourselves