Lenovo ThinkBook 14 G3 ACL 14-inch (2021) - Ryzen 3 5300U - 8GB - SSD 256 GB AZERTY - French

hello Greg from Back Market I first bought a MacBook Air 13" (2015) - Core i5 1,6 GHz - SSD 256 Go - 8 Go AZERTY - French, which failed a few weeks after the end of the warranty. a problem with the motherboard which cost me 200€. I'm sorry. and then I bought this Lenovo ThinkBook 14 G3 LCD 14" Ryzen 3 2.6 GHz - SSD 256 Go - 8 Go AZERTY - French. The network card is damaged and the trackpad is inconsistent. So, please let me know what I need to do to get everything working perfectly again and thank you in advance for your prompt reply. Mr Eric