It's been around a year since I switched from ARC browser to Chromium... (Date is 2025-06-17)

Finally got around to doing this:
Applescript:

tell application "Chromium" 

	set wList to every window whose visible is true    
		repeat with app_window in wList
			tell app_window
				repeat with currentTab in every tab
						if (URL of currentTab) contains "meet.google.com" then
							set active tab index of app_window to 1 
							set index of app_window to 1
									
								exit repeat
						end if

					end repeat
			end tell
		end repeat 
end tell

And in my hammerspoon just running it whenever Chromium is focused and I'm pressing cmd-v (but only for right command
Lua:

function handleLayerEvent(keycode)
    if not hasEnteredLayer then 
        return 
    end
...
    if keycode == 9 and hs.application.frontmostApplication():title() == "Chromium" then
            hs.osascript.applescriptFromFile("/Users/s.../scripting/select_google_meet_in_chrome.applescript")
            return true
        end
...

This script listens only for right cmd, then does some various things when it is pressed down, like launching apps, running scripts, adjusting windows when certain key commands are pressed
Lua:

event = hs.eventtap.new({hs.eventtap.event.types.keyDown, 
                 hs.eventtap.event.types.keyUp,
                 hs.eventtap.event.types.flagsChanged}, function(e)
    keycode = e:getKeyCode()
    local type = e:getType()
    local rawFlags = e:getRawEventData().CGEventData.flags & 0xdffffeff

    if type == hs.eventtap.event.types.keyDown then
        if handleLayerEvent(keycode) then
            return true, {} -- eat the event
        end
        if handleRemapEvent(e) then
            return true, {} -- eat the event
        end
    elseif type == hs.eventtap.event.types.keyUp then

    elseif type == hs.eventtap.event.types.flagsChanged then
        flags = e:getFlags()
        -- since we don't actually get keyUp for right command, use absence of other keys to get whether right command keyUp event..
        rightCmdKeyUp = not (flags.shift or flags.alt or flags.ctrl or flags.fn or flags.cmd)
        if rawFlags == 1048592 and hasEnteredLayer == false then 
            hasEnteredLayer = true
            -- enterSound:play()
        elseif rightCmdKeyUp and hasEnteredLayer == true then
            -- exitSound:play()
            hasEnteredLayer = false
        end 
    end
end):start()