Well yes its possible

here are some ways to earn some free crypto

1.Rollercoin

although it isn't the best mining solution but its great , why?
simply because you play games and earn crypto i know what you probably thinking: "uh i don't need another play to win website Vik" but its not only a play to win its a mining simulator so its like a game which you play games to earn power for the main game to mine more quickly,

https://rollercoin.com/?r=kfuu46db
*this link contains referral so i would really appreciate if you join with this link

2.Faucetcrypto

Best faucet i had ever used, it is free, withdraw available when you reach 1000 points that means its so easy to withdraw from there, and you will likely withdraw less than 1 day using it I mean like 30 mins a day probably, you can also do tasks in the site to earn more, why another faucet and task to pay?, well this is the easiest one ever, but remember don't use VPN or proxies or tor to reach this website

https://faucetcrypto.com/ref/992942
*this link contains referral i appreciate if you use it

3.Cryptotab brower

a chromium based browser if you don't like Firefox, and you like chrome this is a nice browser you can use it to earn some bitcoin and browse at the same time, Its not available for Linux that's so sad :(, but i use it on my phone and its awesome, but if you have mac or windows on your system this will help you have some passive income,

https://cryptotabbrowser.com/16130
*this link also contains reffrals

4.Pi network

it recently reached 10 million users, its a lot, the concept of Pi is that you can mine on mobile devices, its created by a team of Stanford students and you can earn easily, it wont use extra battery power, so there is no reason not to join,
oh, can you please use this referral cause you will need a referral to get in
https://minepi.com/0151730199
and use 0151730199

5.Brave Browser

Have you ever hear of BAT or basic attention token?
there is a way to earn some BAT and that's using Brave Browser ads you can simply go download brave, its a wonderfull browser and its also available for Linux :)), so after downloading you can go to brave Rewards setting and enable brave reward ads
the project is awesome and I recommend it to all of the people around the world caring about their privacy
oh amd i almost forgot its open source!!!
learn more about the project hear:
https://brave.com/

6.Mining

if you have a good computer, and want to have some passive income you can use minergate that is available for Linux, Windows and mac of course, so you just need to download this and mine some coins for yourself
Learn more here
https://minergate.com/

7.staking

Some coins use POS or DPOS (proof of stake) while some use POW so if you want to mine some of that coin you can buy some of that and then stake it, for example if you buy 1000trx aka tron and freeze it and vote for SRs you will get something about 0.2 tron every 24 hours, or you can do the same with ada(cardano), bnb(binance coin), ...

8.Lending

if you have a lot of a coin that uses smart contract like tron or ethereum you can lend it for some rewards and that, but remember that you cant use you assets while you have lend them and you have to pay for network fee
for lending tron use :
https://sun.io/

9.Blogging on Hive or steemit

if you are here you probably know this one, but if you don't you can blog on steemit to earn when people give you upvotes for your posts

10.lending your hard drive space

if you have extra space you can lend it to platforms like bittorrnet file system(btfs) , storj, burstcoin , ...and earn some crypto, i reccomand using btfs and getting btt, cause btt is a great token based on tron network by the way
here is how to get started with btfs
https://docs.btfs.io/docs/btfs-demo

11.URL shortening

here we are with the last one
they are some sites that pay you to shorten links and share them
my favorite is cb.click, use it its awesome

12.commenting down there

if you enjoyed this, then comment i will upvote your comment and if some other people upvote it too that they will, wont you?
you will earn something for yourself