Is it okay if I provide my personal email address on my paper instead of my institutional one?
It is ok to use e-mails other than institutional (academic) addresses in your publications, but there are some points to consider if you're planning to do so:

Availability/reliability: you want other researchers/readers to be able to find you. The paper will hopefully be available for a long time (forever?), and it is impressive how much visibility and opportunities you can get years after a good publication;
Keep a professional address: It may sound silly, but some people insist on having funny e-mails and use them professionally. It does not look good. Also, if you plan to have a professional e-mail for years to come, I recommend registering a domain and have control over the address, even if you plan to SMTP to Gmail or similar services;
Some universities keep email accounts (or forwarding services) for alumni (McGill is one example). It is good for them (you feel more secure in using your institutional address) and for you (people can contact you long after you graduate). Of course, that means periodically check the account or make sure forwarding is properly configured.
University policy: check your university policy. Some institutions require specific affiliation statements and using institutional emails for publications related to them, especially if the research is funded by the institution.