Consumer amplifiers cannot be used to amplify a microphone.
- the signal level produced by a microphone is much lower than the level expected by the inputs on the amplifier. The difference is ~ 30-60 dB, which is a huge amount.
- A condenser microphone has some electronics built in which need to be powered. This power is supplied as 'phantom power' by the device you connect the microphone to.
What you need is a device that supplies phantom power. This can be a mic preamplifier or a mixer, but both of those output a line signal you have to get into the computer.
In your case, a computer audio interface with a microphone input, as Tetsujin's answer dscribes, is the easiest way to get what you want.