Gerrard is being linked with a return to Ibrox after the Rangers sacking of Russell Martin.
The Liverpool legend said on the Rio Ferdinand presents podcast: "I haven't been ready because I haven't got that (coaching) team set around me. And the timing hasn't been right.
"My daughter's just had a baby. I've just become a grandad. I wasn't ready. I haven't got my staff ready.
"So unfortunately, those opportunities have come at the wrong time, if you like.
"But if the right call comes my way, the right club, the right challenge, and I've got my people set, which I will have at some point, I'll take that challenge on because it's in me."
Where I can improve
Gerrard was in charge at Rangers from 2018 to 2021, winning the title in his last season.
"I know where I'm strong and I know there's areas where I need good support and I need special skill sets to make me better and stronger in terms of my staff and my group," he added.
"I felt like I had that to a tee at Rangers (with Gary McAllister and Michael Beale). A lot of coach changes at Aston Villa and over in Saudi, I don't think helped me from a personal point of view.
"I'd love another go at some point.
"I want to change a few things and improve a few things and come back fresh, with a few different people around myself.
"I'd love another couple of challenges doing this and that's what I'm working on in the background at the moment.
"A few different ideas, a few different people around me.
"Now I'm enjoying family time and doing a lot of things that I haven't been able to do. But there's a part of me that still feels that there's a bit of unfinished business in terms of wanting to go in and face another couple of exciting challenges."