I highly doubt it is possible for you, given your age,weight and height to train and NOT get any mass gains.
In theory you could do heavy compounds such as deadlifts, squats and bench press. To minimize muscle gains you should normally only do single reps with high weight relatively to your strength (high intensity). But even then, the muscle gains would not be zero.
Doing one rep work all the time is not possible because it will lead to injury. You also do not have as you said access to equipment so all that is out of the question. Anyhow, your goal should be to minimize muscle gains not eliminate it. It is impossible to train to gain strength without gaining any muscle especially as a beginner.
If you have zero equipment and you do not want to buy any I suggest that you accept that it is practically impossible to do bodyweight exercises and seriously gain strength without gaining any muscle. This is because you will do mostly do higher rep work which builds little strength (it mostly grows your muscles or builds endurance depending on the rep range you are working out with). Now that may be false because you could find something so heavy to put on you that you can do heavy triples with normally body weight exercises (but this seems impossible unless you have access to some very heavy, dense stuff such as concrete).
Have in mind, since you want strength, muscle gains will highly facilitate strength gains. Strength depends on your CNS and your muscles. Thereby if you want optimal strength gains you should also grow your muscles. I do not see why you would want zero muscle gains but I will keep on answering your question as this is your goal. Nevertheless, I don't think there is any way to train your CNS without using your muscles and hence making them grow.
All in all, in my opinion you should do two things:
Accept that you can't have zero mass gains if you want to gain strength, especially without any equipment.
Try to do your best with what you have. You should grab something heavy, put it in a bag which you can wear for extra weight, buy a pull up bar if it is possible and do push ups, pull ups, pistol squats at a rep range below 5. This seems pretty basic but so are the options you have since you have no equipment. You might be able to do more complex stuff depending on what stuff you have available at home enabling you to improvise.
PS: All this seems pointless to me. I suggest you readjust your goals about not gaining mass. Unless by mass you also mean fat which then renders my answer useless. If by mass you also mean fat, then just pick any good bodyweight routine available and try to eat around maintenance calories.