I got my paste & pads on Amazon as well. I got the grizzly pads and paste, mostly because I saw a bunch of recommendations on this sub for it… have had no complaints in the year and a half since I did it.
Corsair is a reputable brand, so probably safe with that too, I’d assume.
Here are the exact links to what I got.
Thermal Grizzly Kryonaut The High Performance Thermal Paste for Cooling All Processors, Graphics Cards and Heat Sinks in Computers and Consoles (1 Gram) https://www.amazon.com/dp/B011F7W3LU/ref=cm_sw_r_cp_api_glt_fabc_56GRCZMGVDD1P9WGHE40?_encoding=UTF8&psc=1
Thermal Grizzly Minus Pad 8 Thermal Pad, 120 × 20 × 1.0 mm, 2-Pack https://www.amazon.com/dp/B00ZJSBRE6/ref=cm_sw_r_cp_apip_pHndYcFjcLISd
I second chhappy7. This is good stuff: https://www.amazon.com/gp/product/B011F7W3LU
Thermal Grizzly Kryonaut.
While you're in there, you can replace the battery. I think this one fits, but make sure your exact laptop model's listed: https://www.amazon.com/33YDH-Inspiron-Latitude-081PF3-12-Warranty/dp/B07X5H9NMN