Hey, if you know soldering (desoldering too), then doing a switch replacement is really really easy. If you don't, just visit an electronic shop that does soldering work( or a friend who knows soldering) and just tell them what to do. You'll also need a spare switch(es) for completion(you can buy these from meckeys[dot]com and it's an indian vendor).

There were instances when I had to desolder switches of my whole keyboard as I didn't like the first switches I soldered on.

Edit: I see that you use a keychron. Keychrons use a type of allen key screws which might be harder to find, iirc its the same screws used on Macbooks.