You're not enjoying lockdown, but you know you are comparatively better off than many others. And you want to help people who do not have your privilege.
Here are a few suggestions, vetted by friends in the non-profit / social development world.
These are campaigns on fund-raising sites that aim to:

1. Help medical professionals with equipment (masks, etc.)
2. Assist daily wagers with basic sustainance, food grains, etc.
3. Support sanitation workers and others
4. Donate to provide soap, sanitizers, etc. to people
If you'd like to volunteer in your neighbourhood, please see this Facebook group set up to 'help people help people': https://www.facebook.com/groups/caremongersindia/
I should have added here that these campaigns provide a 100% pass-throgh of funds to where they are needed. https://twitter.com/zigzackly/status/1242137235958329345
The folks running these campaigns request that you use netbanking when you donate, to avoid credit card charges for these platforms.
On this, let me emphasise: the masks cost ₹200 each. If you clapped, or laid down some beats on your steelware, for five minutes, take less than five minutes and donate five masks? https://twitter.com/zigzackly/status/1242138306382647298
Adding links to some similar Twitter threads I've come across which you could check out. There is some overlap, but you're likely to find different perspectives too.
@DimpledJalebi's list starts here: https://twitter.com/DimpledJalebi/status/1242504369557270529
And @DevangPat's list is here: https://twitter.com/DevangPat/status/1240858063738818561
Sumanasa Foundation: seeking contributions to buy provisions for community kitchens run by the Greater Chennai Corporation: https://twitter.com/tmkrishna/status/1242746022964559872
An @RotiGharIndia is taking freshly cooked meals to security guards, labourers, rag pickers and other disadvantage people in the Mumbai Metropolitan region: https://twitter.com/RotiGharIndia/status/1242773662060576768
And of course the Prime Minister's National Relief Fund: https://pmnrf.gov.in/ 
That's all I have now. Everything in his thread all in one place: https://zigzackly.blogspot.com/2020/03/covid-19-in-india-donation-drives-you-can-support.html
And @Silvertalkies has a list of orgs and contacts (in Bangalore, Chennai, Bhubaneshwar, Pune, Mumbai, Chandigarh) which are helping senior citizens with things like getting groceries and food https://silvertalkies.com/organisations-providing-support-senior-citizens-coronavirus-crisis/
Apnalaya is reaching out to vulnerable households in Bombay's M Ward, one of the city's poorest precincts. Follow their Twitter ( @ApnalayaTweets) or support at http://apnalaya.org/donation/ 
Fit Brigade, volunteers helping Bombay senior citizens living alone, delivering essential items (groceries,meds,fruits,veggies) & cooked meals. SoBo: 9821887707/ 9820391911; C Railway suburbs: 9004670600/ 9833170665/9773706712; W Railway suburbs: 9819236951/9821159710/9022420360
Sparsha Charitable Trust which works in Bombay's Wadala area, is seeking support for getting supplies to vulnerable families there. See http://sparshatrust.com  or email info.sparshatrust / gmail
http://yuvaindia.org  (Youth for Unity And Voluntary Action) is raising funds for the urban poor via https://milaap.orgfundraisers/support-youth-for-unity-and-voluntary-action
Mercy Mission in Bangalore is a federation of NGOs coming together to #FightCoronaTogether. See their (work in progress) page at https://www.facebook.com/mercymissionindia/
I'd mentioned up-thread a couple of other people compiling similar lists. Here's one more from @evolvingpotato. How can you resist a handle called @evolvingpotato? https://twitter.com/evolvingpotato/status/1243159708602642434
All campaigns in this thread updated in one blog post here: https://zigzackly.blogspot.com/2020/03/covid-19-in-india-donation-drives-you-can-support.html
A few tweets upthread, I mentioned @projectmumbai1's fundraiser for protective gear for healthcare workers. Saying it again 'cause they've tweeted it, & also 'cause a little birdie told me contributions will be matched by an anonymous donor https://twitter.com/projectmumbai1/status/1243423761564454913
And this https://twitter.com/missdrookie/status/1243543341888831491
If you know doctors or people who can help get PPE to them, here's one person to get in touch with. https://twitter.com/IndianPatriota/status/1243811244626378752
https://twitter.com/karwanemohabbat/status/1243946225746886657
In Bangalore's Akshayanagar area, @LeftarmSpinster and friends, with Enablers United and Bozo Wags, are feeding humans and neighbourhood dogs. Please get on touch if you'd like to help.
The @NRAI_India wants to provide 10 million meals in Delhi/NCR, Mumbai, NBangalore, Kolkata and seeks your support. https://nrai.org/feed-the-needy/ 
You can follow @zigzackly.
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