I am using STM32H745BIT6 MCU and I want to add support of BLE and WIFI with this MCU. So please suggest external BLE/Wifi module compatible with STM32H745xx MCU and having nice support/demo examples available.

[Tesla DeLorean]

Suggest you go fish for the ones looking to have the features and demos, and community you want.

Primarily you want something with USART, SPI or I2C connectivity, which the STM32s can afford you,