In the case of black holes, lights are pulled into by great gravitational force exerted by the dying stars (which forms into a black hole). If light has no mass, how is light affected by gravity?
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gravity isn’t a force. so there is no gravitational pull on mass. This is a teaching lie taught to kids. Granted it is a very useful lie in that gravity as a force is actually applicable in most scenarios. Even a moon landing can be done with just newtonian physics (gravity as a force).
But a slightly more advanced educational lie is that mass distorts space-time and makes everything pass through it bend towards it slightly (depending on the size of the mass and the distance).
this covers the fact that light also is affected by gravity. It also solves the problem of ‘how does gravity affect an object at a distance’
I think the last explanation I saw was that time is distorted a little bit more closer to the mass than it is further away which makes an object that is going straight (even at standstill you have speed since the earth rotates and the entire solar reference frame is moving at speed). the small difference in time means your head has a different trajectory from your feed, causing all of you to experience ‘gravity’.
[this seems to explain it](https://www.youtube.com/watch?v=UKxQTvqcpSg)
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