My laptop is so slow how can I fix it

Rasi Gaming you really should give us more information. I would start by removing unwanted and unneeded files. The check how much Ram your computer has, what OS your computer has and the sized of the HDD. YOu could upgrade your computer to the limits of what your motherboard supports. So changing the HDD to an SSD and installing maximum Ram that your OS and motherboard support. Win 32bit versions only support up to 4GB so if you go to a 64 bit OS you could expand that memory id you stay with a 32 GB no reason to go higher than 4GB. As you see it all depends on what you are currently working with.