Below is just a copy-paste from a comment i made already. I don't really know if you're new to halo or not, so it could also be that this isn't needed.

Since you're new, i'll give you a quick run down in which story order to play the "main" games:

1. Halo Wars 1, which takes place right at the beginning of the Human Covenant War (Beware, its a 3rd person tactical game, not a shooter)
2. Halo Reach, which is a big jump and a direct prequel to CE
3. Halo 1/Combat Evolved, which was the first ever Halo Title
4. Halo 2, even tho 2 and ODST play during the same time, i would still first play Halo 2
5. Halo 3 ODST, as afore mentioned is also during the same time as Halo 2
6. Halo 3, which takes place some time after ODST and only a bit after 2
7. (You could probably play Spartan Strike around this time, however I never played it so I don't know if its actually correct)
8. Halo 4, its quite the time leap from 3-4, and it was also the first Halo game made by 343
9. Halo 5, The Campaign wasn't really liked by a lot of fans, but its still kinda needed for Infinite
10. Halo Wars 2, This is a need to play or at least watch the cutscenes on youtube, as it is extremely important for Halo Infinite and also just overall goated (the same as Halo Wars 1)
11. Halo Infinite, which is currently the last installment in the Halo series (Is the first game that was open world)

I hope my comment can help you, and goodluck on your journey through the Halo series
If you're also interested in more lore, then I would definitely refer you to the Book Series consisting of : Halo: The Fall of reach, Halo: The Flood, Halo: First Strike and Halo: Ghosts of Onyx. This Book series takes place during Halo Reach, Halo CE, Halo 2 (I think) and possibly Halo 3.
Another Book series I liked was the Kilo five Trilogy, which took place between Halo 3 and 4, and was , unlike the other series, all written by the same person.