I am 70 and starting to look at online dating stuff and it really is daunting

[update] throw in I am a widower and makes it more challenging. Any advice on approach and what sites to use? I am all ears on this now. Thanks for all the comments given. Its no doubt a daunting venture into this world even for younger people, made worse when older. 95% of all the responses so far are really nothing more than scammers. I know how spot and deal, I feel for those who are taken advantage of. Again, thanks for all the comments