I got a notice of continued deposition of plaintiff I do not have an attorney anymore. I was not personally served do I have to attend

If the original notice of deposition was properly served on your former attorney when you were still represented than you would have to attend. I would not take the risk of not showing up at the deposition as your failure to show could result in sanctions. If the date is not a good date for you you should all opposing counsel and see if they will agree to a mutually convenient date. Good luck, Jon