Oh, that is obvious. The US had absolutely no fighters that had the kind of range to escort a B-29 from Tinian to Japan. That was over 1,500 miles each way. The longest range fighter the US had was the P-51 Mustang at just 1,000 miles.
One does not need rocket science to know why there were no fighters escorting the bombers flying over Japan. None of them were escorted, we simply had no fighters that were capable of doing that. Even the fighters we had on Okinawa could have gone no farther than Kyushu.
Geography, you might want to learn it before making such stupid claims.
And no, it is a lie that Japan wanted to surrender. The fact is they wanted an Armistice. And it was not up to either FDR or Truman, terms had to be agreed upon by all of the Allied Powers (excluding the Soviet Union). Can you see China accepting an Armistice? The UK? Sure as hell the US was never going to accept an armistice.
And no matter what you try to say, an armistice is not a surrender. Japan wanted to end the war in place and return to 1941 borders. Still maintaining most of their presence in China, and in territory they still occupied. No war crimes trials, no occupation, no demilitarization. That is not surrender like you insist, that is an armistice.
And nobody was having it. They let Germany get away with an armistice after WWI, and all of Europe paid the price for that. They were not making that mistake again.