I'm trying to make a trident weapon, but I don't know how to make it a DEX weapon instead of an STR weapon. (YES, I'm doing this because my strength is low, Ok?)

You cannot, but you can add the Finesse property which would let you use whichever of the two is higher just like every other Finesse weapon:

Modifier: Weapon Property->Subtype: Finesse

Thanks! I was wanting to make my trident better because it's supposed to be like my character's signature weapon and everything, and -1 wouln't really fit that lol. I'll try this out!

OH MY GOD THAT ACTUALLY WORKED LMA0

Of course it worked. That Modifier is exactly how every finesse weapon works. Heads up, if you ever get a magic trident, even just a simple +1 Trident, that Modifier won’t carry over. You will have to add it again to each trident you get.

Homebrew is kinda my jam. I know that creation software as well as any non-Mod, non-Staffer can. Heck, I know that system better than some of the Moderators. If you hear from me how to make that system accomplish something, be surprised if it doesn’t work.

PS- You may want to check with your DM about that alteration however, they may not approve of it in their campaign. A lot of DMs specifically disapprove of adding Finesse to a spear for some reason, and a trident is just a harder to use spear. (Unless of course you are the DM, in which case ignore this part.)