Every time I set up a new computer I have this issue that drives me crazy.
I use Firefox and Google regularly, but I have difficulty setting it up to get new tabs to open to Google with the cursor in the Google search bar.
Rather than defaults, or re-setting defaults, it seems that multiple add-ons are required to accomplish this.
I have used "New Tab Homepage" for years, and it successfully opens a new tab into the main Google page.
However, Firefox seems determined to place the cursor in the URL bar at the top, and at the end of whatever character string is already there.
I have installed various add-ons and selected "URL bar blank" but even then it never seems to work.
All I want to be able to do is, for example, press Control-T (for a new tab) and immediately type < best time to transplant iris bulbs > without any additional drama such as picking up the mouse to move the cursor or backspacing to get rid of whatever residual characters are lingering in the URL search bar, or any other intermediate steps. I can't understand why this is not the default, anyway, but I am old and crusty and clearly do not think like other people.
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Please do not threadcrap with suggestions that I change browsers or search engines. I am satisfied with my preferences, as you are with yours.
My structural and functional annoyances with the others are far greater than the minor issue above.