TTC for 10months, currently 37

Been TTC for 10 months now and I'm 37 this year, time is running out for me but unfortunately we are only BD for maybe once a week or twice a week max. And most of the time it doesn't happen during the fertile window (husband is either tired, not feeling well, busy etc...) his libido isn't high either.

I feel like I should just give up and accept the fact that it's not meant to be for us. Perhaps it is a blessing in disguise for us to not have kids. There must be a reason why God didn't bless us with any.