Playing spin well is a length decision, not a hand-eye one. Against pace you react; against spin you have time, and that time is what most batters waste. The rule that survives every surface: get all the way forward to smother the spin, or all the way back to watch it turn. The ball you get out to is nearly always the one where you did neither — caught on the crease, playing at where the ball pitched instead of where it ended up.
The spinner's wicket-taking ball is the one that beats you in the gap between the two.
You do not need to pick every variation to score against spin. You need length first and turn second.
Blocking a good spinner for an hour is how you eventually get out. You have to make them change their length.
Playing with hard hands away from the body. Soft hands and the ball dies off the bat; hard hands and it carries to slip or short leg.
Reaching for the ball outside off. Let it go or let it come to you. Spin punishes the stretch.
Getting the pad in front without the bat. Playing for turn that doesn't happen is a classic lbw — keep the bat beside the pad, not behind it.
The gap between bat and pad opens when your stride goes across rather than forward, or when your bat swings from the leg side toward off. Stride at the ball, keep the bat coming down beside the front pad, and make sure your head arrives over the ball rather than falling to the leg side.
Both, and for the same reason: to deny the bowler a length. Use your feet when the ball is flighted and you can get all the way to the pitch; sweep when it's flatter or the field is up. What matters is that you have an answer that isn't defending, or the spinner bowls the same ball all day.
Because the margin for a wrong length decision grows. On a flat pitch a slightly-wrong stride still finds the middle; on a turning one the same error finds the edge. That's why the forward-or-back discipline matters more as the pitch gets worse, not less.
Sticks watches your net session through your phone and speaks this exact kind of coaching in your earbuds, one focus per ball — in English or Hindi. Video never leaves your phone, and it's free to start.