Stuck in boot menu

Hi everyone im not a tech nerd and dont know a lot of the terms so this is hard to explain but please try to help me anyways, i dont want to lose my laptop

I switched to linux a few months ago, not dual boot. Just a full linux install (mint) ive decided its not for me and wanted to switch back to windows.

So i took my usb that had the mint installation and tried to clear it(something mustve gone wrong i think) and put my windows iso on the usb. (Theres a few partions on it but it wont let me delete them and i dont even know what they are)

Downloaded ventoy (i think thats the name) because i followed a tutorial and thats what it said.

So i start up my laptop again and try to install windows. It fails, tried a few diffrent things to get it to fix, disabling the secure boot, installing right from the windows installation menu. I lost track of what i did and just kept shutting of my laptop and starting again.

Now im stuck in the ventoy menu, i can exit and enter the lenovo menu too. But i cant do anything else, the install fails everytime and i cant enter linux again.

What did i do wrong and what should i do to just install windows

Did you in Bios set Boot from USB first.. if you did that and you ran the windows installer and it reboots, it will then boot in to ventoy again if it was set to boot from USB first.
So if you remove ventoy and restart the computer it should boot on the internal disk and continue the installation.