Hi, Stykes,
Sorry to hear you're experiencing this issue.
You can reset Roblox by deleting the Roblox folder in the AppData folder.
1-Right-click on Start then click on Run
2-Type: %localappdata% and click on ok
3-Search for the Roblox folder and delete it
4-When finished, relaunch Roblox and check if the problem was fixed
Note: This should not delete any places that you may have saved in Studio unless you have manually chosen to save them in this folder.
I hope this information helps. If you have any questions, please let me know and I'll be glad to assist you further.