This is about the worst time ever to "have" to buy a vehicle. But there can also be opportunities if one can garner one of the very high offers from places like CarMax, Carvana, etc., that balances both the higher price to be paid for a new vehicle as well as the loss of any sales tax advantage available in some states with a trade-in. If you only like to buy used vehicles...this is truly a horrible time for you for sure! New may very well be the better deal. My advise, unless you have an unbelievable offer on existing, wait another year or so until supply chain calms and manufacturing gets back to something "more like prior normal".
Bottom line...do the math carefully!