I worked at a place where we got bought out and the new owners tried to give us 2 extra weeks of vacation a year. We all laughed. Because nobody was getting to take the 2 weeks they already had.
These days with pooled sick and vacation/personal, my personal experience suggests 20 or so days as a starting point for large-ish tech companies. I'm sure there are some/many that give less but I know what I've personally seen that wasn't considered extraordinarily generous.
These are separate from PTO. At the very minimum, I would expect 10 PTO days in addition to 8 sick days. You might lose some goodwill if you max out your sick day use, but you are owed those days by law regardless.
Single digit vacation days would be insane. I wouldn't wish it on my worst enemy.
Personally, I like to let them accrue so I can take one very long holiday overseas every couple of years. I'm lucky to have a good immune system that leads to only missing maybe a single day a year due to sickness, allowing the others to be used for last-minute errands and mental health days.