I'm a big fan of these dudes for smaller scale plants:
https://www.amazon.com/Barrina-Spectrum-Equivalent-Greenhouse-Installation/dp/B07V6YJKR6
Mammillaria sp. - front left
Bunny ears cactus (Opuntia microdasys 'Rufida') - back right
Fairy castle cactus (Acanthocereus tetragonus 'Fairy Castle') - front right
Not sure about the other one.
They need a lot of light and minimal water. I would buy a good grow light (I use this and this) and leave it on them 8-10hrs/day, ~5 or 6in away from the plants, or put them outside in full sun all day. Only water when soil is completely dry. I can't tell what they're potted in, but it sort of looks like tree bark chips. I would change that to a mix of cactus soil and perlite. Don't water for a few days before or after repotting.
I've found that the Barrina lights work well: https://www.amazon.com/gp/product/B07V6YJKR6/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
(they come in 1-foot, 2-foot and 4-foot lengths, and in 2, 4, and 8 packs).
This screw-in bulb has been working for me too: https://www.amazon.com/gp/product/B099WT33JV/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1
On Amazon, Barrina T5 Grow Lights, Full... https://www.amazon.com/dp/B07V6YJKR6?ref=ppx_pop_mob_ap_share
They’re nice, these ones don’t have a built in timer so I have them plugged into a smart outlet. They also don’t have a dimmer, so there’s only one light strength. But I think my plants have liked it.