Majestic TF stays low, when DA increases

Hi,

Very new to SEO. I have a few content sites, and I see that while my DA is improving over time (Slowly but surely), and I'm around 10-15 DA, my TF is between 4-5, and isn't going anywhere.

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I talked to colleagues, and understood that some of them are starting brand ne websites with a score of 6.

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My question is - Is there anything that impacts majestic score other then links? Perhaps my site can be optimized, and this could improve it's score?

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Thanks