Alt+1-9 will select the tabs in order. I don’t know how to do any others. You can also cycle through them with ctrl+tab for cycling to the right and shift+ctrl+tab to cycle left.
I’m not sure if the first thing works on Windows but works on Linux (KDE/xfce)
I tend to agree with this as other Lemmy apps work just fine with iOS lockdown mode such as mlem and memmy.