I would suggest the following manual choppers as they have good reviews and from popular brands.

Pigeon by Stovekraft New Handy Mini Plastic Chopper with 3 Blades

Rating : 4.5 out of 5 from more than 21,500 reviews.

The rating and large number of reviews indicate, it is a good choice.

It's approximate price is Rs. 290 Check current price

Features :

Made from unbreakable ABS plastic for long-lasting use, Material: Polypropylene (PP)
Sturdy 3-blade design made from Stainless Steel, As this chopper by Pigeon can be opened and detached easily, cleaning is an easy task using lukewarm water, mild detergent and a soft cloth
Unique string function to chop vegetables and fruits with ease
Eco-friendly design, no electricity required
Colour: Green, Material: Plastic
Package Contents: 1-Piece Handy Chopper
Warranty: 30 Days Warranty, Only On Manufacturing Defects

Read reviews and more about Pigeon by Stovekraft New Handy Mini Plastic Chopper with 3 Blades

Nova Quick Cut Small Plastic Handy Chopper

Rating : 4.3 out of 5 from more than 1,300 ratings.

Reviews and rating indicate, it is also a good one.

It's approximate price is Rs. 320 Check current price.

Features :

Sturdy 3-blade design made from Stainless Steel
Made from unbreakable ABS plastic for long-lasting use
Unique string function to chop vegetables and fruits with ease
Eco-friendly design, no electricity required
Easy cleaning: Blades, bowl and storage lid are top-rack dishwasher safe, components come apart for easy cleaning
Powerful and versatile: Just put all the ingredients into the container at once and pull a few times
1-Year limited warranty against manufacturing defects

Read reviews and more about Nova Quick Cut Small Plastic Handy Chopper

Rating : 4.2 out of 5 from more than 1,700 ratings.

Reviews and rating indicate, it is also a good choice.

It's approximate price is Rs. 250 Check current price.

Features :

Read reviews and more about Ganesh Chopper Vegetable Cutter