If you like the 70s, classic rock vibe, but want something newer, you are in luck. There is an entire subsection of music right now that hearkens back to that era. Don't let the names rattle you, it is all marketing.
Embrace the new millennia.
Graveyard
Vintage Caravan
Night Flight Orchestra
Opeth (last three albums are straight up prog. Don't go further back than that, you probably won't like what you find.)
Riverside
Elder
Fall of an Empire (Smaller band, look on Bandcamp or a streaming service)
Witchcraft
The Sword (their last two were very classic rock, previously they were pretty heavy)
This is IMO the torch carrier "genre" of 70's rock.
I'd reiterate Graveyard. They're fantastic. Also look into:
All Them Witches, their deep cuts really dig into americana, bluegrass, and swampy blues. Truly one of the most versatile and gifted bands of this era.
The Muggs, listen to "never know why" and you'll get em.
Hawkwind (from back in the day) Lemmy's work before Motorhead and it's so good it's not even funny. Psychedelic, driving, even occasionally proggy.
You'd probably also really like:
Wolfmother
Blues Pills
Radio Moscow
King Buffalo
J Roddy Walston and the business
Sleep Walkers (relatively unknown, but real funky)
War on Drugs
Lake Street Dive
Vulfpeck (not Volbeat <-awful)
There's so many amazing bands out there that aren't huge. Hopefully they get there though.