I am really paranoid/scrupulous about plagiarism and I would like to ask if what I did below counts as some form of plagiarism. A while ago, I wrote a paper and basically I don't know if the very last sentence in my conclusion sounds too much like the very last sentence of somebody else's article. My paper has gone through the plagiarism software, so it isn't like I copied and pasted their sentence; moreover, I did not just go and change a few words in the sentence either.
Here is how the sentences sounded like:
Their final sentence:
His anger did not lessen with age any more than did his habit of criticizing other composers. As he continued to argue until his passing in 2002, it was his work.
My final sentence:
What is absolutely certain is that, for Cornelius Pufferfish, his work remained his work and this was something he never allowed his fellow composers to forget.
Is it plagiarism to have a similar concluding sentence as somebody else and also have it positioned in a similar place in the paper? Although I cited this person throughout my paper, I didn't think I needed to cite this final sentence in my conclusion because it was just a general observation that could be gleaned/concluded from the argument in the body of my paper.
I mean if you wrote a paper on the causes of WW1 and discussed throughout how the naval arms race was a contributing factor, you wouldn't have to cite the following statement in your conclusion 'Thus, the naval arms race was a significant factor in the cause of WW1' even though many scholars have already said this, right?
I think I am just idiotically overthinking all this, but I am so unsure; I just get so paranoid about accidentally plagiarising and getting in trouble.