You don't lose your PR status when your PR card expires. You only lose your PR status through renouncing it yourself or by having IRCC revoke it. If neither of these has ever happened to you, then you are still a PR.
You have some chance of being able to get a PRTD approved. You should apply, indicating that you have been living with your Canadian spouse outside of Canada for the last five years. You will want to provide evidence to show that you have been living together the last five years. However approval of the PRTD is not guaranteed. IRCC will sometimes apply the "who followed whom" rule when determining if you can count time spent outside of Canada living with a Canadian spouse towards PR. If the reason why you are outside of Canada is primarily due to your spouse, meaning that your spouse moved outside of Canada due to an employment opportunity (for example) and you followed your spouse, then you should be able to count the time. If it's the opposite and your spouse followed you outside of Canada (meaning that you had employment or other obligations outside of Canada and your spouse decided to leave Canada and move there with you), then IRCC may say you do not qualify to count this time. Long story short, impossible to say what the outcome will be but certainly worth trying. If you have strong evidence that you relocated outside of Canada due to your spouse's obligations / employment (and not ours), definitely provide that.
If your PRTD is refused and you officially lose your PR status, then your Canadian citizenship spouse can always sponsor you for PR through the spousal sponsorship program again.
