Self pollinating vegetables: https://harvesttotable.com/self-pollinating-vegetables/
Even fruits and veggies that usually are pollinated by bees can be manually pollinated. Some plants can be shaken or the wind can help pollinate. Some, it would be painstaking work to have to do it without bees.
I’m not a botanist, and far from even having any sort of green thumb. My knowledge is from 9 weeks of botany in Jr. High.