1. There are plenty of 1 person businesses. I have run basically a 1 person software product business for 18 years (with a bit of help from my wife with admin). I never lie about it being just me, but I don't shout about it either. A lot of my customers seem to assume that I am a team of people in an office in the US.
2. Just concentrate on getting those first few sales. It may never happen.
3. It depends. If you want to raise funds and recruit lots of people, you should probably be in a big city. If it is just you, you can be anywhere.
4. Big topic. It isn't enough to do stuff, you need to also tell people about it (marketing). The best marketing channels vary a lot depending on your product, goals, personality, budget etc.
5. Big topic. I prefer not to deal with investors and bootstrapped my business with my own savings. Venture capital allows you to launch bigger and faster, but with a lot of strings attached. I suggest bootstrapping, at least to start with, You can always try to raise money later, if you have some customers.
2. Just concentrate on getting those first few sales. It may never happen.
3. It depends. If you want to raise funds and recruit lots of people, you should probably be in a big city. If it is just you, you can be anywhere.
4. Big topic. It isn't enough to do stuff, you need to also tell people about it (marketing). The best marketing channels vary a lot depending on your product, goals, personality, budget etc.
5. Big topic. I prefer not to deal with investors and bootstrapped my business with my own savings. Venture capital allows you to launch bigger and faster, but with a lot of strings attached. I suggest bootstrapping, at least to start with, You can always try to raise money later, if you have some customers.
I have written various stuff about marketing and running a small software business over the years. You might find some of this useful: https://successfulsoftware.net/starting-a-microisv/
Good luck!