It is alive, but saying it's well is a big overstatement. Can't have 10 minutes without aimbots ruining the game.

Find a good server or set of servers and it's still perfect. I'll link a couple options below, there are many many more:

https://uncletopia.com/servers

https://teamwork.tf/community/quickplay

Doubt it would be any easier than CSGO

The aim and movement mechanics of tf2 are certainly easier, though the gameplay rules are more complex and there are classes with different abilities and attributes.

Doesn't run on 64 bits