Asking regarding ad

So, I acquired an advert in my Instagram feed relating to a crypto trading firm. It appear genuine like there 1k+ followers and constructive assessment. Its initially ask us to offer them funding and they'll return us significantly larger than precept amount like approach much. Like its lowest package deal is of 850 rs if I invest 850 rs by way of their buying and selling company they may provide me with profit or refund. But i am so confused