I know people who have built bigger buildings by themselves. They work construction for a day job so they have a lot of experience and tools. Still it absolutely is possible.
That said, there will be times that help makes things easier. So if you can get some - even for a few hours - plan a head so help is there for the hard parts. (in my experience “Free” help works for beer: buy the good stuff, but not enough to get them drunk).
Lacking help, doing this yourself is about the tools. Cranes can be rigged up - ropes and pulleys. Your local rental center will often have tools you really need. Don’t work on windy days, those panels can catch enough wind to turn into a hang glider (when they come down the panel is destroyed and you have broken bones)








Your odds of finding the winning ticket on the sidewalk about about the same as buying it. So I walk around once in a while looking for winning tickets. I haven’t found one yet, but who knows. Bonus - I get some much needed exercise in the process.