Avoiding scammers may be a little hard if you are always online, but avoiding scam is very possible, the first thing you need to know is that you should never send money to anyone you met online. While some of them are actually real/genuine, 89% of them are scammers only looking for someone to exploit.
Since i have get scam a long ago which ruin me down then i always take this three step seriously.

Understand what you desire most. People who try to con people attempt to target your desires. They know that if you want something, then you’re willing to do anything for it. If you understand where your weakness lies, then you can be careful when people are talking about or “offering” it.

Talk it over with someone else you trust before making big commitments. Law enforcement agencies calculate that less than 10% of victims file reports when they are scammed. Somebody who is not involved in the situation may have a better viewpoint on it. If anything, two heads are better than one.

Always check things out for yourself. Check the product that you’re buying first, conduct research online, and check how things work from reputable sources.