2022 US Senate Election cycle is more Democratic friendly than 2018,2020, and 2024.

2018
Red State Democratic US Senate seats.
IN(Donnelly-D) lost
MO(McCaskill-D) lost
MT(Tester-D) won
ND(Heitkamp-D) lost
OH(Brown-D) won
WV(Manchin-D) won
Purple State Democratic US Senate seats
FL(Nelson-D) lost
MI(Stabenow-D) won
MN(Klobuchar-D and Smith-D) won
PA(Casey-D)won
WI(Baldwin-D)won
Purple State Republican US Senate seats
AZ(OPEN Flake-R)Dem gain
NV(Heller-R)Dem Gain
2020
Red State Democratic US Senate seats
AL(Jones-D) loses to any Republican but Moore-R
Purple State Democratic US Senate seats
MI(Peters-D) narrowly wins.
MN(Smith-D) wins
NH(Shaheen-D) wins
Purple State Republican US Senate seats
AZ special(McSally-R)Dem Gain
CO(Gardner-R)Dem Gain
GA(Perdue-R and Loeffler-R)
IA(Ernst-R)
ME(Collins-R)
NC(Tillis-R)
2022
There is no red State Democratic held seats up in 2022.
Purple State Democratic US Senate seats
AZ(Kelly-D)
CO(Bennet-D)
GA(Lieberman-D)
NV(Cortez Masto-D)
NH(Hassan-D)
Purple State Republican US Senate seats
FL(Rubio-R)
IA(OPEN Grassley-R)
NC(OPEN Burr-R)
OH(Portman-R)
PA(Toomey-R)
WI(OPEN Johnson-R)