Paradox-Free Time Travel Is Theoretically Possible - Says some studies

 Recently I have gone through some articles on time travel (just some casual reading) which explains that how time travel may be theoratically possible. It says that even if the time traveller changes the incident in the past, the time will correct itself to the same future thus keeping the time traveller motivated in the future to go back in the time and thus leading to no paradox. Often the example citid in this regard is that of COVID-19's "patient zero"

these articles often quote that "You might try and stop patient zero from becoming infected, but in doing so, you would catch the virus and become patient zero, or someone else would." Now what they will often ignore or not elaborate is that this is one particular case where two different objects (persons) are involved and the actions of the person from the past (Patient Zero in this case - referred as Person-A now onwards) may not have a direct bearing on the actions of the person from the future (Time Traveller  - referred as Person-B now onwards) 

So in this particular case, even if the person-A is killed before getting the COVID-19, some other person may become patient zero and the COVID may spread, thus leading to the motivation for person-B. So, as these theories say, paradox may not happen. But, it is only one particular case with one particular outcome assumed to be true. There may be different outcomes:

For example, lets assume that person-B had sucessfully stopped person-A from getting infected and become patient zero, but someone else became patient zero (lets call him person-C now onwards). Now, what if this person-C comes in contact with either of the parents of person-B (mom or dad) and caused his/her death. In such a case, person-B will cease to exist and paradox will happen again. Above theory of non-paradox assumes only one particular outcome, which may not always be true. 

Another case is that if paradox is not to happen and time is bound to realign itself so as to keep the person-B motivated to go in the past (time traveller from the future) then this theory shall be true for all instances of time travel. In the case above, person-A was saved from being patient zero for COVID-19, but in case of grandfather paradox, if the grandparents or the parents of the person-B are killed or prevented from meeting each other thus leading to the non-existance of the person-B himself, what corrective actions will the time take to reallign itself. May be his dad will meet another lady and marry her and their son may travel back in time in a similar fashion, but that son won't be person-A. 

So, unless a reasonable examples and different possible situations arising out of same cause are evaluated, it is not correct to say (even theoratically) that time travel paradox wont happen. I strongly disagree with the same. 

*However I believe that time travel paradox won't happen because the past cannot be altered. I had written my views a few days back on the same in this same blog. (These views are not supported by any facts & figures, so I simply call them views)

Thanks for your time & reading my views.