Yes, I hear you. There have been times when I just sort of planted seeds, while still being able to say certain things that were on my heart. Such as "Jesus is the Savior of the world, the end of the Lord is full of mercy", and then just let them decide what that means...and I could be like "there, I said it".
A couple of really powerful thoughts for me is, "if ET is true then God created this world and all the people in it, knowing that 95% of them wouldn't be saved in this lifetime", and "what saves people, believing in Jesus as Savior, or believing in God as Eternal Tormenter/that there is a forever burning hell?". The Bible doesn't say "believe in hell and you shall be saved". They're just not thinking straight - yet.
God always has a remnant, of which you are one right now. The good news is, every knee will bow and all the nations will be blessed.
Keep the faith. James.