If you’re interested in learning more about modular synthesizers, the entry step is very low nowadays.
While a “real life” analog Eurorack System is very expensive, there is a virtual version available that runs in the DAW like any other VST-Instrument. It’s called VCV Rack and was developed as Open Source Software.
So another group of developers (DISTHRO) made their own version of it and here we go: Cardinal Synth is 100% free and gives you over 1000 Modules to play with!