I don't usually recommend this, but since you are in a situation where you really can't afford a VPN or a seedbox and live in a country where torrenting is prosecuted then I think that grants a free pass to abuse the tor network a bit and torrent over tor.
There are some guides online on now to route the traffic, note that it's very easy to leak traffic if you don't know what you're doing. Look for a good guide . I'm guessing the safest way to do it is by using Whonix.
If going that route avoid downloading big torrents if you can find smaller ones or try to search for direct downloads first.
And also, I don't usually say this, but, avoid seeding. Yes leeching is bad, but saturating tor is probably worse I think.


