It's difficult given the lack of information to suggest much ...
If low light & no CO2 & no fertilizer & no enriched substrate, not many plants will grow let alone thrive, especially if your water column is equally bare of nutrients ... ie if you have hard water, some plants will fare better than if you try the same in very soft water
Without some sort of cover or distraction, I can't imagine many Bettas ignoring shrimp long term
Note that some of the plants in the Easy category may still have medium CO2 requirements, so be sure to click on individual plant profile pages & check
S repens
Nymphoides hydrophylla 'Taiwan'
Don't try to grow tissue culture plants under these conditions
BUT if you can add in a substrate such as
Tropica Aquarium Soil &
Growth Substrate (note that Tropica suggests that one may use just the soil - I'm just in the habit of both as my tap water is very limited in nutrients, even GH & KH can test as zero)
I set up a 30cm cube in an East window (with blinds), placed a few stones, & added the following 1-2-Grow leftover bits
Micranthemum 'Monte Carlo'
Marsilea hirsute
Rotala macrandra
Pogostemon erectus
Hygrophila 'Siamensis 53B'
Half filled with water ... intending to return & set up a small filter & possibly CO2 & fertilizers ...
Instead the little water garden has sat in limbo ... EXCEPT for the plants which have been happily growing
(it's been 3-4 weeks)
Monte Carlo has almost carpeted
M hirsute has done the same
R macrandra has small leafs but growing steadily
H Siamensis has grown slowly, again small leafs (but the shoots were rather tiny coming out of the cup)
P erectus again looks a miniature version but nice new growth
When I look midmorning the tank is pearling.
Did have some lovely green water with surface film that I mopped off last week, then it's been a cloudy week so water looks almost clear again
This week I'll finally do a water change & consider adding the originally intended filter & shrimp & (test) Betta
Anyway that's my experiment, so you might think along similar lines & also be inspired by Marcel & experiment
Or say more about your goals/expectations for this tank & perhaps generate more specific suggestions
(I know I read this when you first posted & just felt there wasn't enough information on what you intended/wanted ... what sort of light? why not some nutrient rich substrate? what sort of water???)