The recovery words are actually a Master key , Master password. All applications in Ledger devices (Ledger Nano S - Ledger Nano X) create their own private keys through this master key. The recovery words become your master key, and any private key created from that master key is always the same private key.

Rescue words come from a specially prepared BIP-39 word list, totaling 2048.

So, is it possible to reach a seed by entering these recovery words guessedly or by chance?

With these words in the BIP-39 list, 115 792 089 237 316 195 423 570 985 008 687 907 853 269 984 665 640 564 039 457 584 007 913 129 639 936 different seeds can be created, which means it is close to impossible.