Problem is I'm getting home from work 7-8pm. Housekeeping, food, then rest, and I need to let my mind decompress before going to bed. That takes me past midnight. The only people I've seen do this over decades are very type A and/or they finish every night with a few drinks of alcohol. I don't drink.
My routine is leaving for work at 7.00, getting home 19.15 or so, have a soup for dinner to avoid food time (pre made) and then about 2.5h of relaxing/hobbies, being in bed 22.00-6.35. I get showering and exercise in at work, apart from hobby exercise like sea swimming/walking that fits into those 2.5h.
Mostly I stick to this routine because I get a lot more stuff done with a full nights sleep, I am a lot less good even on 7h so by now I know not to even try to compromise on that.
I also don't drink, so that's not an option (and I think a lot unhealthier anyway).
No kids make this a lot easier than for people with families though.