It's your fault for not being careful.
...right. I should've anticipated that this game allowed for further shoving than what I am used to in D&D 5e. 5 feet and 5 meters are almost the same, anyway. (Big sarcasm here.)
You say Iwasn't careful, but I have been. I have explored the whole goblin camp before making a move. The "goblin holes that allow them to climb 50 meters instantly" are invisible. So if you could block them, you had to know they were there. Big d*ck move to pin it on my inaptitude when you know about it beforehand.
But let's assume that ALL that I said previously was normal and preventable. Just now, a goblin tossed a vial of acid from a distance of 30 meters straight on my party. That 100 feet. In D&D, 5e, you can't throw ANYTHING with your hand past 60 feet. You're going to tell me Ishould've been careful? That it is normal that the game doesn't allow me, the play, to shoot a Fire Bolt or Magic Missile past 18 meters (60 feet) when the range in D&D 5e is 120 feet, but the enemy can throw potions at their allies or vials of acid/fire at the enemy twice that range?
Oh, and I forgot to mention in my original post that yesterday, I put a Fog Cloud in-between my party and some distant goblins a little below me to prevent them from shooting at me... and guess what? They could shoot me through it just as if it wasn't there! They must have had Truesight 120 feet, because normally, you CANNOT SEE through heavily obscured areas, and therefore you CANNOT TARGET creatures with ranged attacks.
EDIT : Right after I posted this reply, I went back to the game to redo the whole goblin camp. As I attacked the sleeping bugbear at the upper level, everybody IMMEDIATELY woke up, ready for combat (no turn of waking up, figuring what's going on? How did they even wake up anyway?), and the bugbear goes first, shoves my fighter TEN METERS AWAY from him (still no Strength contest) down to the base floor and then goes to attack another party member. That's 30 feet. There isn't a single creature or mechanism in D&D 5e that allows shoving back 30 feet, let alone without any saving throw.
2nd EDIT : I reloaded the game just before attacking the bugbear in its sleep, this time putting ALL my party as close to the wall as I could. He still shoved my character 10 meters away down the ledge.