Where can I get a sample completed F709 for the situation where I have gifted my son money for 2019 in excess of $15,000? I find the form and instructions to complicated

Do an internet search using any search engine for a completed Form 709

I just saw your question from August on this same topic.  How much did you gift your son because if you are married, then there is no reporting required if the gift was under $30,000.   See also you private message to you