Generally, you can only claim amounts as tuition fees if they are on a T2202a or a receipt that says they are eligible. Here is a CRA list of what is not Eligible: https://www.canada.ca/en/revenue-agency/services/tax/individuals/topics/about-your-tax-return/tax-return/completing-a-tax-return/deductions-credits-expenses/line-323-your-tuition-education-textbook-amounts/amounts-which-cannot-claimed-tuition-fees.html
You can also contact the CRA to double check if an expense you have had is eligible: https://turbotax.community.intuit.ca/replies/2647704