Considering applying for a third PhD Program after having bad experiences in two I am totally lost and devasted mentally and physically, I have been in a program and left after one year because of lack of experiment as well as racist supervisor. I have accepted to lower job in other country to sustain living until I got another phD in different country with the same subject, now I am seven months in and had a qualifier today, one of the examiners didnot understand what I am doing and cannot judge and they decided to have another qualifier in three months which I wasnot expecting, normally every student pass the qualifier.

The project coordinator was offensive to me and to me mani supervisor who is nice. 

The project lack of experimental data and that is the curse of interdisciplinary project. I saw a lot of red flags happening and it is hard to taken in since i am alone and also worked hard and having a side activity related to the field which is successful. 

I hope you can advise me as I really need support, I asked them to leave since we dont have data we cannot validate.

I have received an offer from other university where a supervisor wants me to join and he said I can do all the experiment I want.

I am crying because I stucked with two wrong places, I am actually working at university at my homecountry and I have to get PhD for returning,but now it seems I have to start all over again.

I am hitting 29,  and I see it is failure for me to experience, I hope I can chatt with someone for help in figuring out what is the problem as I really need it.....
I guess I don't understand your dilemma. You have an offer. If it seems better than your current situation overall, you should consider taking it. Your age is not material to such questions. You will eventually be 50 and then 70, if you are lucky, no matter what your choice is now. 

If you've been misused in the past, don't let it color your decisions. 

But, make a list of the positives and negatives of each possibility and then choose what seems to be best.