This link tells you what you should have saved by a certain age: https://www.synchronybank.com/blog/median-retirement-savings-by-age/
These are good numbers, but in reality, your actual figures will vary. Example: Living in Miss vs Cali or living in the USA vs Thailand makes a big difference in how much money is needed. I know these are extreme examples, but it's the reality of things.
A better rule and one that some say is more realistic is the 25 X yearly expense formula. Say you spend 50k a year. 50k X 25 = you will need 1.25 million for retirement. Not so much what you have at each age group, but once you have reach your savings number, you can retire regardless of age.
I have a modest pension provided by work, a 403b and a Roth IRA. For me personally, I am not counting on the pension from work or social security. Once my 403b and my IRA reaches my goal, I will jumping off this 9-5 ride. Social Security and my pension will be gravy if they come into play.