19+ in most of Canada. 18+ in Alberta, Manitoba and Quebec. Every game covered on this site has a negative expectation, which means that over time the house keeps a share of everything wagered. No strategy, system, bonus or payout percentage changes that. Gambling is a form of entertainment with a cost, and the only money worth putting through it is money you are content to spend.
One of these is worth noticing. Several together is worth acting on today rather than after the next session.
Set limits when you open the account, not when you are already losing. Every operator makes tightening a limit immediate and loosening it slow, which is the one piece of friction in this industry designed in your favour.
Provincial programmes cover the regulated operators in that province. Ontario players can self exclude across every iGaming Ontario site at once through the AGCO administered programme, which is broader protection than an operator by operator exclusion. Other provinces run schemes through their own lottery corporations: Loto-Quebec, Play Alberta, BCLC PlayNow, Atlantic Lottery and Saskatchewan's programme. Offshore operators are outside all of them, so exclusion there has to be requested from each operator individually.
Support is free, confidential and available in every province, and you do not need to have hit a crisis to use it. The national starting point is the Canada Safety Council problem gambling resources, and every province funds a dedicated help line reachable by phone and online chat. In Ontario that service is ConnexOntario, available 24 hours a day. Search for your province's problem gambling help line, or ask a family doctor, who can refer you without cost.
Organisations worth knowing: Gamblers Anonymous runs free peer meetings across Canada in person and online. Gam-Anon supports family members, who are affected too and often get overlooked. GamTalk offers moderated peer support online for people who are not ready to speak to somebody directly.
Help line numbers and programme details change. We deliberately do not reproduce phone numbers that may go stale; search for your provincial problem gambling help line, or start with your provincial lottery corporation's responsible gambling page, which is kept current.
Do not settle their debts, and do not gamble with them to keep an eye on it. Both make the situation worse. Say what you have noticed without accusation, point at the provincial help line, and get support for yourself through Gam-Anon. You did not cause it and you cannot fix it by managing it.