[3261.72] T:28.46 | rH:46.44 | IAQ:0.00 | IAQ_acc:0 | Static IAQ:0.00 | Raw gas :0.00 | Status : 0
The fact that the Raw gas value shows 0.00 here seems to indicate that this output was either not enabled (typ. via bsec_update_subscription), or that the gas sensor configuration was not correctly set or not successfully applied (typ. via bme680_set_sensor_settings). Please ensure that the arguments passed to these two functions are correct and that the resulting I2C transactions also look as expected.
Based on the output of the two points above, also feel free to share code snippets for review to see if anything outstanding can be found.