Strict3443
Guide for Linux: https://strict3443.codeberg.page/i2p-info/hugo/public/posts/how-to-use-i2p-on-qbittorrent-nox/
You can install i2pd with sudo apt install i2pd
and then point your services towards your i2p router (Ex. 127.0.0.1) and you are good to go.
Yes, absolutely. I have a VPS that runs a i2pd router and I can set my clients to point to my VPS and I am able to use the I2P network. In doing so, I had to make sure I forwarded the correct ports on my VPS so that it would reach the i2pd application. I will do a write up soon.
You can try using BiglyBT on android following these instructions: https://github.com/BiglySoftware/BiglyBT/wiki/I2P#user-content-biglybt-i2p-and-android
Otherwise, I’d suggest using a desktop to run i2psnark, BiglyBT, or qBittorrent and use i2pd along with those clients.