If you are new to 18650 cells , you could get the Eagle Eye X6R
This light charges the cell inside so you will not have to purchase a separate charger. Well for now, soon after joining this forum you be finding (buying) all sorts of things you’d thought you’d never need.
https://budgetlightforum.com/t/-/33113
Also JetBeam has the “C8” with built in charging and a cell included.
Good luck!