meta diversity and peoples complaints

So im really curious since i read people say they are only meeting like the same 3 decks. Where exactly does this happen? ive written down the opponents decks from yesterdays matches (this was on rank 3-1) and these are the results:

• 3x syndicate (2x jackpot 1x swarm firesworn)
• 2x monster (1x frost, 1x deathwish)
• 3x skellige (1x control, 1x warrior, 1x rain)
• 2x nilfgaard (1x assimilate, 1x mill)
• 3x northern realms (1x siege, 1x meditating mages, 1x alumni)
• 4x scioatel (1x elves swarm, 3x natures gift)

now obviously this is a low samplesize and you'd expect more tryharding on very high pro ladder mmr but even on lower ranks i saw a great variety of decks with the exception of syndicate. are people complaining for no reason? do i have "lucky" matchmaking meeting such a big variety? i was playing a shieldwall sabrina deck myself if anyone is curious about that.