Help on building an accurate model

Question/Issue:
[Describe the question or issue in detail]

Project ID:
[644265]

Context/Use case:
[Provide context or use case where the issue is encountered]
Cannot for the life of me make an accurate model
Steps Taken:

  1. Added different data, added less data, made data more distinguishable and easier to learn/classify.
  2. Tinkered around with different processing blocks/models.
  3. Searched online for independent fixes and failed.

Expected Outcome:
Improved performance a functioning model.

Actual Outcome:
More accurate training and uncertain when deployed on the majority

Building onto the arduino portenta H7.
This is supposed to be a model that can tell when my dog sits/does not sit.