Why even have a studio, if it has to be that small?
I have a Village Park that I frequently shoot in that's only 3 miles from my studio. Because of Weather problems and sometimes big events being held, I can't always use it, but I have picked out 12 locations within easy walking distance within the park that make great backgrounds for shoots. No cloth background or stand is needed, so light winds are not a problem, and sometimes are a benefit. I'm a bit limited in what I can do with props and lighting there, but I can use reflectors and scrims to control that big light source in the sky. I have a folding wagon to haul my gear in and there are many shaded areas within the park, so if one location is too bright, or too populated, another is easy to switch to. There is a tunnel under a highway to a more remote parking area. Both ends of this tunnel have big metal gates that are great for backgrounds and the area around the tunnel openings are all brick and these too make great portrait backgrounds. This park has a theme park sized train ride and a 2 level carousel that's in an octagon building, so there are great backgrounds for photo shoots there too. The park management has given me permission to do shoots any time, so long as I don't block other's free use of the area while doing my shoots. If doing them on the weekends, I sometimes need to change locations if a crowd forms, but it isn't often. A "location" for doing a shoot just has to be interesting and large enough to fill your frame. It can be next to a pile of trash cans, if you can keep them out of the photos. It can be a wall of a factory or department store, if it has a nice or interesting pattern to it. A bush on the side of a street in the right light can make a good background too.
Look around where you are for interesting backgrounds in areas where what you are planning to do will not interfere with public use or not be on private property, unless you get permission first and then each time afterwards. When you find interesting spots, take a few photos to help you choose the needed one or two locations later when you want to do a photo shoot. Try to keep track of the best times, when the natural lighting is best for each location. Then meet your subject/model there and have a great shoot. Speedlites with small soft boxes and stands or folding reflectors will be best for arranging the needed lighting requirements, because that big light in the sky doesn't always cooperate. I consider this park that I noted above to be one of my "outdoor studios", but I live on a lake and have 1,600' of shoreline in front of my house to use for my other "outdoor studio".
Now, go find those outdoor studio locations near you. Take photos of the locations with or without a model so you can remember them, and have fun making great pictures. My portrait photography was done this way for almost 60 years before I was able to finally build my own studio.
Charley