Join Two Songs With Exactness

Greetings, Monterey 12.0.1 and Audacity 3.1.2

I’m a newbie, and know of one method to join two songs end to end. However, my paste of the 2nd song is a hit or miss of exactly where I want to place it near the end of the 1st song. Is there a method to place the 2nd song exactly - with clock accuracy or as precise as possible?