If you've got a decade of wear on them, one of those clampy systems might be good to re-establish a baseline, symmetrical bevel on either side that you can then maintain with more frequent touch-ups. It depends on your level of patience since they do take some time to set up and figure out the mechanisms (if you set it wrong, your angle at the tip can be much more acute than the belly.) I mentioned waterstones and those can be a rabbit hole, but also a fun zen thing you like that kind of thing. Hard arkansas stones are also a thing but they remove material very slowly so it requires a lot of skill to freehand sharpen with them.

I'd definitely recommend avoiding any powered grinding system as they remove grotesque quantities of material from the blade, and do not recommend any type of pull-through vee notch systems because they also scrape off a lot of met