Kinda. You can buy a bidet from Amazon and install it.
Or if you can't do that, then just use a portable bidet, i have this one and it's the best thing i have ever bought
You could use this website, however, I suggest printing it out and filling it in the normal way if you're not applying to too many schools.
You're also free to make a post on r/IntltoUSA if you have any further queries.
I agree with this. Given modern communication (which OP clearly has access to), there's no excuse anymore for not having extracurricular activities, especially service. You can volunteer your time in all kinds of ways, even if you can't travel anywhere.
For example, there's an app called Be My Eyes where people who are visually impaired can ask you to identify and read stuff for them. You might even be able to get training to staff an abuse or suicide hotline, especially if you speak a language that isn't spoken around the world.
I'd advise reaching out to international organizations, for example the World Bank, Red Cross, and Doctors Without Borders.