I like make sure the cat has clean water and enough food, Then I sit somewhere quietly to read or just do anything anything quietly, patiently waiting for the cat to get used to me being there. After a while, the cat can either ignore my presence, which is completely okay, or can show curiosity and approach me, in which case I would pet her/him or initiate play. In any case, by the end of my visit, I would try to approach the cat slowly and gently, and if she/he shows they don’t want me near them, I would respect it and try again the next time i visit.