Yes, you may be able to claim expenses that you had to earn that income.
If you need to find out what your industry code is, which you can look for here: https://www.statcan.gc.ca/eng/subjects/standard/naics/2017/v3/index
We have a video on YouTube that goes through preparing a Self-Employed return: https://www.youtube.com/watch?v=NzszSEVEv-U
If you have TurboTax Live Assist & Review, here is how to talk to a Tax Expert: https://turbotax.community.intuit.ca/community/navigating-turbotax/help/i-m-using-turbotax-live-assist-review-how-do-i-talk-to-a-tax-expert/00/873764