How do i earn some fg if i have no luck? what can i sell for some minimal amount of fg? What is your strategy?

(I am willing to buy fg, but i have been spending a lot the past few months already, so kind of limiting myself a little bit for now)

It all depends what build you have and what you're able to farm.

If you're running budget gear and trying to build up I recommend Countess + Andy.

Even if you get zero valuable unique/set drops you'll get runes, keys and essences fairly consistently. It's easy, it's reliable and given enough time you'll build up enough currency to gear up and start farming more difficult areas.

farm keys , its easy and u can earn couple hundreds of fg easily

Sports go bet turn 100fg into 3k+ in weeks just don't become a welcher