Watch some videos of great drummers.
You’ll note that they use a variety of sticking patterns.
When it comes to bass, you should work on developing the ability to use a variety of patterns involving one or both fingers. Occasionally throwing in a third finger or thumb as well!
Drummers were also mentioned a few times, and it is indeed a good exercise to also mimic drum rudiments, such as, e.g., paradiddles that could be transferred to plucking patterns like i-m-i-i-m-i-m-m... offering yet more versatility and flexibility for different situations!
This is good advice. Drum sticking patterns adapt very well to two finger plucking. Practicing paradiddles, single alternating, and single finger plucking to proficiency builds a muscle memory to the point that one rarely has to think about a plucking pattern on a given piece of music. It will happen instinctively.