CBR has a list of 10 Sci-Fi sequels that surpassed the original. Not sure I agree with all of these but here they are:
https://www.cbr.com/sci-fi-sequels-b...future-ii-1989
10. Back To The Future II (1989)
09. Aliens (1986)
08. Bride Of Frankenstein (1935)
07. Blade Runner 2049 (2017)
06. Mad Max: Fury Road (2015)
05. Catching Fire (2013)
04. Logan (2017)
03. Dawn Of The Planet Of The Apes (2014)
02. Terminator: Judgment Day (1991)
01. The Empire Strikes Back (1980)