C++ compiler doesn't support c++11

For school I installed wsl2 for windows and then ubuntu. Then I installed vcpkg and added it to my PATH. Then I tried to run CLion for C++17, but got the error that my cmake was outdated. I tried to update this to v3.19.3 using this helpful answer: https://stackoverflow.com/a/59689105/14585249. When running the sudo ./bootstrap command I get the error that my compiler does not support C++11. Can someone point out what I'm doing wrong? I'm just following the steps my school provided me.