You probably have too little memory. Minecraft asks for 8.00 GB space recommended, a common Lenovo laptop can easily provide that for about 100 bucks. x64 OS is helpful, though. This allows your computer to be more resistant to shutdowns and crashes (x64 was designed for CAD users and common gaming.)
Another possibility is your refresh rate for your graphics. My PC has it around 4.5GHz (listed as 5 but idk if my computer cares lol), and I've noticed that low numbers are essentially torture to the game.
Don't take my suggestion lightly, though. Having that you can run similar games like Roblox confuses the conflict; this was my best advice. I'm sure there are multiple videos online about this issue, have a look at some! :D
