greetings dachele and welcome.
there are 100s of threads here on this very common topic below are a few really useful 1s.
short answer is that this is largely a characteristic of older VINYLs...
and cleaning (beyond the basics) if pointless.
any chemical that REALLY would remove the tackiness will dry/damage the vinyl.
1. try an auto detailing product for dashes or vinyl,
this will make the surface NOT sticky and add gloss.
2. try future vinyl FLOOR WAX which will do the same thing,
but may last longer.
expect to reapply 1-3 times a year depending on heat and use.