I'm old enough to remember when you could actually sit comfortably in an economy seat. I'm 5"9" and my husband is 6'5". I never book a flight without finding the aircraft type and going on Seat Guru to check out the legroom and pick a decent seat. If you've never checked it out, it will tell you good and bad seats. It also gives the legroom and seats to avoid.
https://www.seatguru.com/findseatmap/findseatmap.php
