Agree, a hanger alignment tool is essential and worth every penny. I’ve fitted 2 new hangers recently, both needed minor adjustment to get perfect alignment / indexing.I don't know what the hanger is supposed to look like, although it does look awkward in the way it joins with the mech.
Send a pic of the rear mech from the rear of the bike. The mech should be hanging vertically in all positions. If it isn't then the hanger is bent. If it is badly bent, then it's new hanger time. If it is only a bit bent, then a tool called a "mech hanger alignment tool" can be used to restore order. Every bike shop should have one and do the job for about £10.
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