I played bits of RE and (I think) RE2 back in the mid 90's without ever beating them, and then played the **** out of RE4 on PS2 when that came out. Took about a 10-year break after that, and then played the RE HD Remaster on PC in 2015. It's an incredible game that holds up to this day.
Then RE7 came in 2017 and as far as I'm concerned the developer has been on a tear ever since... RE7 was a true return to form, genuinly disturbing and scary, RE2 remake (2018) was incredible, RE3 remake (2019) felt a tad cash-grabby but was still very enjoyable for what it was (a more fast-paced, action-oriented entry) RE8 was amazing, and the fact that they had the balls to actually remake RE4, and it ending up being as good as it was is admirable to say the least... I am curious to see how RE:Requiem pans out.
In-between the above entries I also played RE Revalations 1 and 2, which were fine. Gameplay-wise they're closer to (the HD remaster of) the original, the settings are pretty cool, and RE:R2 is episodic, which is kind of a novelty for the franchise -- I'd recommend playing them if you enjoyed the others and are hungry for more.
As you can probably tell it's one of my favorite gaming franchises. I've played all of the above-mentioned titels on PC through Steam. I have not played RE5, RE6 or RE0.