Is There a Way to Remap the Special Keys on my Microsoft Bluetooth Keyboard

Hi

I got a Microsoft Bluetooth Keyboard to use on my MacBook (because magic keyboards are overpriced) and it has an emoji button (which I'd like to map to globe), a lock button in the top right corner (which I'd like to actually lock my Mac), a search button in the top right (which I want to open spotlight search), it has an "Office Key" and I don't really care about that, and there's a settings key which I also don't care too much about, but it would be nice if it worked.

All the FN keys work, except F8 (dunno what this is meant to be), F9 (has a message icon, probably meant to open some messaging app), F10 which is meant to open task-viewer of whatever mission control is called on windows, and F11 which has a calculator icon, and F12 to take a screenshot.

Yes it probably was stupid to buy a Microsoft keyboard, but did I really want to spend a thousand dollars or however much a magic keyboard costs?

Thanks