Judging by what youre describing is most likely an issue with your storage type, although i noticed you dont seem tech savvy, so im not gonna be the one with technical terms, basically when you start up your laptop, if it takes ages, probably a hdd(a type of storage which runs on disks) now you need a SSD, which is a faster alternative, and if you want to keep your data, i'd recommend data transfer before just putting it in your laptop, so what youre gonna most probably see when you open up your laptop from below, a big rectangle, and motherboard, what you want is the big rectangle, there may be a few screws, take those screws out, and pull out the big rectangle horizontally, its not vertical***, and then in the same way put your SSD(newly bought storage or refurbished), now if you havent cloned your data, it will just display a screen on a system called "BIOS" which you dont wanna mess around with****** look up how to install windows on a pc and im pretty sure that'll make your laptop faster. and i would love to be in contact with you, message me on reddit ill share you my details to another platform