I really want to hear your advise about identyfying the scam sites. Or it could be my honor if you suggest me some of the sites that are legit.
Thank you all and have a good day

Identify scam sites by looking for informations about it. If it's a cloud mining, they must show real pictures of their farm, not Google Images pictures. If it's an investment site paying dividends, they must show with logic how the money is generated and if it's sustainable. Avoid sites paying high daily interest, they usually appear from nothing, last few days or weeks, disappear and appear again with another name (but the owner is probably the same). If you have any doubt about a site in particular, ask on this forum or search for a thread about the site on the search box above.
Most of the sites offering a very high rate of return are probably just scams though there can be also exemptions here as there are really those who are into cryptocurrency trading and they are good at it...usually sites offering fixed return will encounter problems when the quota is not meet and there can be downturns in trading (as it is always ups and downs).
Please refrain and say no to any programs like revshares (I have been into this and of all the sites I got involved ONLY ONE is currently alive and might make it to be very stable all the rests are now dead), HYIPs, matrix programs (unless you are good in recruitment), peer-to-peer donation programs (most will not also last) and all other passing programs that can be gone weeks or months from now.