Can you download Counter-Strike 1.6 in 2024?

Which app? You mean, Counter-strike 1.6? The mechanically (movement-wise) maybe best version, to be infested with mobile players?
My soul cries when I do see these average ppl not ever rushing, not ever taking initiative at CS2 casual. They are literally escaping into the next available shelter, and quite disfunctionally hiding at most. I think
It takes at most 2 rounds with looking at the radar at that level to know if a team is doomed or not.

Well, I have played the 1.x versions for cca. 20 years, and have not really even made the switch to GO (and skipped on Source entirely) – I would say, movement-wise, that would be castrating the gameplay for the mobile players.
I would say, let’s put it in the grave, instead of having a lot of mobile players, if the latter is the only choice available.

1.x versions, at tournaments:
-Players have not been allowed to use scripts (more than 2 commands on a bind, separated by a semicolon). With the exception of buy-scripts.
-For a good while you could not even give any info, or even talk into mic while you were dead – there was even a spectator camera setting to see nothing as dead. Now that is something different, and maybe not by bad means – I mean there are players who can make good decisions, and there are the ones who can not.
-Same goes for the alias command, as aliases are capable of creating script-like behaviors, ppl were not allowed to have a lot of aliases in tournaments.
The solution for this I would say: let’s get rid of the alias command entirely, send it into the oblivion, next to its dear mate the “wait”. Meanwhile, let’s provide binds directly for the very few most commonly used moves, like the jumpthrow, and the invnextgun (and not much).

The point is, what is good for pro play, especially at very competitive disciplines and environments, that would be good for casuals as well. And if not, well, they are most likely not enjoying that game anyway. Most likely, Valve should transform every tier of Counter-strike towards what it was in the older days. But maybe the recalcitrant greed of hardware manufacturers will win.
For example, why there are no two flashes/round at casual? Why scripting is so widely accepted by the community?

There is nothing elite about being capable of copy-pasting some scripts and aliases, but with the help of the alias command, I am sure I could create a lot of greyzone or banned stuff. Also, there is nothing elite in trying to sell the same thing under different names, as some kind of snake-oil, so the counter-strafing script/alias under the name of nullbinds ;), desubtick ;)), or even snap tap ;))).

Does someone even realize, as games improve and improve, that CS2 has a somewhat more proper physics that the previous versions. So, the game world and the player models, are most likely simulated at a higher extent than before. Now imagine, that a proper physical model of a human body likely has joints and hinges for example – just like in racing sims the cars are simulated as if were in deed assembled of springs,tyres and so many other various pars.

Now man, the outroar (literally more like outcry otoh) about the MJpeek, is likely the consequence of similar nonthinking by the average Joe in the scene.
Scripts act in like milliseconds, or even faster. What does the player model does when it would have to do multiple direction changes in milliseconds, into the exact opposite direction, effectively instantly? Also, the initial acceleration of the player model in CSGO and CS2 is really high vs 1.6
It is a genuine effort, most likely the ankle joint will not handle it and you will fall or roll over.

Now, unsurprisingly, rolling over is not programmed into most FPS games. It could be, but that is a design decision, and a game can be good if the balance of reality vs useful design features is good.
Well, Source, and early CSGO can not brag too much about design-sanity-wise. Later, they turned CSGO into a great show (tourneys-wise).
But, the problem remained, the scene have got used to more and more scripts-grade agility boosters, so they do not even consider such things. Valve took the bullet at the MJpeek, and even made fun of it for you – but I am not sure who was the real dumb there.

Those who disagree with it:
Why those ppl who want infinite, granted and eternal consistency, provided by scripts, instead of their mechanical skill, so why those ppl do not go and play something with a top-down camera angle, like MOBA, RTS, or even turn based strategies. This is a tactical shooter, where clever and mechanically agile ppl should come out at the top – not script kiddies.

Well, thinking a bit more about it, I would disallow any form of scripting as well.
So let’s have bindable features, what are already too common in the scene to get rid of, like the jumpthrow, and the hopefully soon implemented invnextgun.
And let’s have a “buyscript assembler” in the menus, where you can create/modify packages of buys and save them onto keybinds. The current buy menu of CS2 is a good enough starting point for that.