I see this type of ? Quite often... any trees close? Run coax underground to tree and then up tree and use a vertical mounted wire dipole. Not an option? What about a dipole on the end of house along the roofline in a inverted v? Or 1 I used at a rental home ....find 2 high points of your roof “ I used a vent pipe and the chimney “ I used 75 lbs clear fishing line to tie one end of wire dipole to chimney and the other end to the vent pipe about 3-4” above roof! Couldn’t be seen from ground and worked great but was directional. Put up a homemade pvc plastic flagpole and make it at least 20’ tall and hide a A-99 inside it! Be creative and you will find a way!
Lot of good suggestions