Hesiod and Ovid are both great, and will give you a lot of the most famous stories.
If you want to supplement them and/or want more general overviews, try the two works put together here: https://www.amazon.com/Apollodorus-Library-Hyginus-Fabulae-Handbooks/dp/0872208206/ref=sr\_1\_1?keywords=apollodorus+library+and+hyginus+fabulae&qid=1642712592&sprefix=hyginus+apo%2Caps%2C118&sr=8-1
Here's what you want:
It's two ancient mythographical handbooks (one Greek, one Latin), compiling the myths. Apollodorus' Library tells all the major myths in one more or less continuous narrative; Hyginus' Myths is not a continuous narrative, but short chapters covering a wide range of myths and is a nice complement to the fuller account in Apollodorus.
The other place to go would be Ovid's Metamorphoses, which is the most influential book of Greco-Roman myth. If you can find a translation you like, it's very readable (some people are put off by the fact that it's poetry, but I personally think Ovid is the greatest author ever).
I mean, the best introduction to Greek Mythology is honestly Apollodorus's The Library.