Needs high sur or newer to install

I have just got a MacBook Pro 11,1 on Yosemite 10.10.5 and am trying to get Sonoma to run but as a complete novice I don’t have a clue how. I was creating an installer but then it came up with the message that it requires high sur or newer. What should I do now?

submitted by /u/harvssasha_2020
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