Help! Dota 2 not opening on mid 2011 iMac OS High Sierra

[dickyshitbox]

Hi, does Dota 2 still run on Mac OS High Sierra 10.13.6? That is the most recent update I can get on this old of an iMac (mid 2011). I've restarted the computer, tried -autoconfig, -vulkan, -vconsole. Nothing's worked. I click play and it doesn't launch.
The specs of the iMac are: iMac 21.5 inch mid 2011. 2.8 GHz intel core i7. Memory: 8G 1333 DDR3. Graphics: AMD Radeon HD 6770M 512 MB.
Please help! I miss Dota! Thank you!
PS. wish I could sell the computer and get another, but I cannot.

[EMX]

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