I have used pi3g's breakout board which has a single bme688 since the dev kit of bosch is not available in my country
Link : https://pi3g.com/products/bme688-breakout-board/
I have also attached the config file
You data file is not correct once it was imported to BME AI-Studio. Only one sensor data in your data file, other sensor data was empty.
Suggestion for you:
1. try to get BME688 dev kit to record data(recommended);
2. if you would like to record data by yourself, you have to strictly refer data format in application note: https://www.bosch-sensortec.com/media/boschsensortec/downloads/application_notes_1/bst-bme688-an001....