Hi Lucio,
There was reference schematic of applicaiton board 3.0 https://www.bosch-sensortec.com/media/boschsensortec/downloads/software_tools/application_board_3_0/app3-0_schematics.pdf, it supplied 1.8V to MEMS sensor.
How much voltage does your MCU supply? If it is higher than 1.8V, then you need to add Bidirectional Voltage-Level Translator between MCU pins and sensor pins.
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