Welcome to the club.
Buy & use OEM/factory sensors & modules. Don't buy from over the counter chinesium made from Autzone, O'Reilly's, Napa, carquest, Pepboys, advance auto. Non oem/factory sensors & modules will cause more problems. This includes seatbelts & their buckles.
Oem/factory engine oil filters. They're cheap & have anti back flow. There's Wix engine oil filters that sme use here.
Radiator fluid is your choice. Just make sure it's for your vehicle. The search bar is your friend. Going to the local Kia/Hyundai dealership for info/help does help.
Other fluids is up to you. Just make sure it's for your vehicle use.
Tires, rotors, brakes, brake calipers, fuses, relays, or over the counter parts can be purchased from Autozone, O'Reilly, Ebay, Amazon/online.
Visiting the local junk/salvage yard for that oem/factory need it now parts helps.
If the vehicle came with it's owner manual, read it. It has very useful info. If it didn't you can buy from the dealership or on Ebay/Amazon.
Replace your glass/incandescent lights with LEDs. Especially your rear combination brake lights, reverse & turn/blinker lights. Glass/incandescent lights will eventually cause the light sockets to get brittle, weak & make the metal contacts to either burn out, not function properly or having to replace the light socket with a new one.
You can visit for info, parts, parts #, fitment to use on non oem Kia/Hyundai site.
Kiapartsnow.com
Mykiaparts.com
Kiaparts.com
Visiting your local Kia/Hyundai dealership for parts, pricing & printouts for parts from the parts department is helpful.
The search bar is your best friend. If the answers can't be found or have questions, post a question.
If in the future if you're going to DIY, repair/fix or upgrade. Take before, middle & after pics.It helps out the forteforums community.
Post interior & exterior pics of your Forte5.
Hope this helps.