That's it?
grav bad, boo hoo, yadda yadda?
Because I insult the fake science Status Quo?
oh, look, Holden. The Artemis failed to launch. again.
Nasa just can't seem to get it up there, if ya know what I mean.
Amateur rocketeers got their GoFast to go up 70 miles.
The Nasa racketeers manage a fraction of that with their big bad boosters.
The "tyranny of the rocket equation" [their words, not mine] makes it impossible for a heavy rocket to hoist itself very far ~20 miles, much like Baron Von Munchausen, who pulled himself and his horse up and out of a slough.

An engine can fire up and exhaust burnt gases all day long, but unless there is something to push against, the effect will be similar to a fireplace blowing smoke up a chimney.
That is to say, Newton's 3rd law has more holes in it than a bullet-ridden slice of Swiss cheese.