Is Bitcoin mining pools safe to invest with?

I happened to follow a few Bitcoin related profiles on Instagram today and within a few hours received about a dozen messages from ppl asking if i wanted s fast secure return up to 5x my investment. Of course i immediately assumed it was a scam then I did a Google search on.mining pools. I haven’t read where it’s a scam or even a high risk move?

Can anyone give me advice on if I should even entertain the idea. Or is it something that is just too good to be true.