Make macOS look like a Linux desktop

Have a look at ubar. It gives you similar style task-bar.

But if you really want to get benefit from macOS, check out these great tools: Launchbar, iStatmenus

For discovering other useful utilities, checkout Macupdate

Just an alternative viewpoint to consider:

Trying to make MacOS appear and behave like Linux (or like Windows, or vice versa) is doomed to failure, because at some point the illusion will break down. There are things that are completely, inherently, and essentially different, which cannot be changed.

The more you pretend that they are the same, the bigger the shock or obstacle when those differences emerge.

I know we all have muscle memory for shortcuts and positions of things, but it doesn't take long to train yourself. The human brain is more programmable than any computer, after all.