why I am not concentrating on studies during lockdown? please send the some instructions to concentrate on studies

There is something called Acceptance and Commitment Theory in the field of Psychology. It is an intervention method that uses acceptance and meaningfulness in different ways. It is not a method of eliminating any particular behaviour. Rather it is acceptance of one's own inhibiting behaviour and mould our lives accordingly. This means you accept that you are no longer as curious you were before. But you mould your habits and lifestyle or working towards your dream in a way that you still work in fulfilling your passion. Maybe you should sit and write the reason you are no longer curious or passionate about something. If it was something like a bad experience or bad feedback that you had or heard, you should write it down and then evaluate the truth in it. You should maybe check the facts and see if what you felt or heard still holds true. And then you write down your current thoughts on your passion. It might be the lockdown talking or it might be because you found something else interesting. If it is just the lockdown talk, be assured that you will feel fresh once this situation passes. But if it has been there with you for a while, then accept the fact that your priorities have changed. Choose the correct course of action and decide on it. If you still want to stick on to your passion, maybe you need to rejuvenate yourself and get back on track. So do not shy away from thoughts that take away your curiosity. Face them and write them down. It might be laziness, it might be the discovery of a new passion, it might be lockdown, anything. Just write it down. Allow those thoughts in your mind and rationalise when you can and fight with them when you have to. Discover what is more important. Your flee of emotions or your passion. Set goals to act responsibly keeping in mind the long term. You cannot come back after a year and try to be passionate again. By then you would have lost the rhythm. Always remember that this is just a mind game and you need to reason with your brain and train your brain and not the other way round.