The official Bedrock launcher from the Microsoft Store requires 64-bit Windows 10 or 11. It will not install on a 32-bit version of Windows.
Despite being a hotfix, 1.19.51 maintains cross-platform compatibility, allowing 32-bit mobile users to play on the same worlds as 64-bit PC or console players. Community Content & Tutorials minecraft 1.19.51 de 32 bits
Explain the added earlier in "The Wild Update" (1.19). The official Bedrock launcher from the Microsoft Store