You mean RTSs? Sure. The tags may not be exactly accurate, but they're a good place to start, and if you're mainly looking for classics you can sort them with oldest first, like so: https://www.gog.com/en/games?tags=rts&order=asc%3AreleaseDate

And you can start with a freeware Warcraft clone, Loria

Warcraft 1 and 2, I think, are still on GOG.

Loria ( Warcraft Clone and it's free)
Act of War (Which is like CNC Generals)
8-bit armies ( plays like CNC )

I would also recommend these games if you like RTS.

Iron Harvest (plays like Company of Heroes)
Ancestors Legacy ( Plays like Company of Heroes)
Heroes of annihilated empire ( Plays like Warcraft )

There is more but I can't remember them all.

Nope.

Er... https://www.gog.com/en/news/warcraft_12_will_be_delisted_from_gogwhat_does_this_mean_in_regard_to_the_gog_preservation_program

A pity Battle for Wesnoth isn't on GOG.

That's not RTS though.

Thought they went back on it. My bad.

Under the "Store" link, click on "Strategy" and set it Bestselling (recently) and you will see tons of games that are similar.

I'm not all that great at comparing, but I think some examples from the top of that list are:

https://www.gog.com/en/game/world_in_conflict_complete_edition
https://www.gog.com/en/game/cossacks_anthology
https://www.gog.com/en/game/star_wars_galactic_battlegrounds_saga
https://www.gog.com/en/game/the_settlers_2_10th_anniversary

I just picked some random ones that I own from that list. There's like 56 pages listed, not going through all that lol.

Also, this is one I really like on GOG. https://www.gog.com/en/game/empires_dawn_of_the_modern_world

Not sure if that was helpful, but good luck on finding your game. I know sometimes it can be hard to find the right game to match up past experiences. =P

Edited to correct some non-functioning links.
.

Damn you're right, oops! Still a pity it's not on GOG though.

What is on GOG is Homeworld: Deserts of Kharak, which conveniently is on sale ATM for 90% off.

I'd like to suggest the first two Empire Earth games
https://www.gog.com/en/game/empire_earth_gold_edition
https://www.gog.com/en/game/empire_earth_2_gold

There is also third, but I have no experience with it myself.
https://www.gog.com/en/game/empire_earth_3

Dark Reign, perhaps?
Total Annihilation & TA: Kingdoms?
Supreme Commander?

I have some more to recommend. Speaking of Empire Earth.

Empires: Dawn of the Modern World is another good Empire Earth RTS made by same developers i think.

The Valiant if you like Medevil games with Dawn of War 2 game play.

https://wz2100.net/
Here you are, a post-bounce RTS.

Hmm .

https://www.moddb.com/mods/dune-wars ( requires Civilization IV: Beyond the Sword )