I'd suggest trying sample questions from both exams before deciding. The formats are different, and your strengths in listening, reading, speaking and writing will matter.
I'm building Hilingo, and we're focusing on TCF Canada. We have mock tests, section-wise practice and AI feedback to help students identify their weak areas.
There's also Maya, our AI teacher, which uses your results to suggest what to practise next.
You can explore our TCF preparation at
https://hilingo.com/.
If you're just starting French, I'd focus on building your language skills first rather than memorising exam answers.