What RTS games are you playing now, please?
https://www.beyondallreason.info/
But... While bar is good, very good. It is also very hard to compete with, so I see it sort of killing any funding for good commercial RTS's for the next few years.
Some SC2 youtubers are now covering Mechabellum, Tempest Rising, BAR, AoE4, and some in-dev titles: Battle Aces, Immortal: Gates of Pyre, Zerospace, and of course Stormgate.
These are all on my list but I'm busy enough playing Warframe ^^'
Give 4 a try! Its multiplayer is excellent. Kind of a hybrid between Starcraft and AoE2 in terms of pacing and civ divergence. (Fewer, more diverse civs)
The archer kiting/dodging mechanic that dominates AoE2 is gone.
I play AoE2, not 4 because that's what my friends play, but 4 is the more interesting one from a strategy perspective. More opportunities to surprise the opponent, use novel strats, go off meta etc.