I lent money to two individuals. I borrowed the money on a line of credit. Can I deduct the interest I paid on the loan? They have not made any payments yet.

No. unless this was a business transaction and you can prove it, you cannot deduct the personal loan interest as expenses.

Please refer to this CRA link for the carrying charges you can deduct:

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-22100-carrying-charges-interest-expenses.html

I hope this was helpful