[10] After winning a match in a state-level under-8 tournament, Batra decided to train under coach Sandeep Gupta who suggested her to switch to Hans Raj Model School where he ran his academy.

Batra was denied a fourth gold medal at the Games by Mouma Das, who defeated her in the final of the women's singles event.

[15] Batra qualified for the women's singles event of the 2016 Summer Olympics by winning the South Asia group of the qualification tournament in April 2016.

Batra became the first Indian woman to bag a commonwealth table tennis individual gold medal in CWG 2018 by beating Yu Mengyu of Singapore.

[20] At the 2019 Commonwealth Table Tennis Championships, Batra was the member of the women's team which win the gold by defeating Singapore in the final.

[22][23][24] Batra won the 2021 WTT Contender Budapest mixed doubles with Sathiyan Gnanasekaran by outplaying Hungary's Dora Madarasz and Nandor Ecseki 3-1.

In the women's doubles event she and Archana Girish Kamath lost to Japanese pair of Hina Hayata and Mima Itō 3-0 in the Quarter-finals.

[28] Batra settled for silver at WTT Contender Doha 2022 with Sathiyan Gnanasekaran in mixed doubles where they lost against the top-seeded Chinese Taipei pair of Lin Yun-ju and Cheng I-Ching.

[29] Batra then bagged a bronze at WTT Star Contender Doha 2022 in women's doubles event with Archana Girish Kamath.

[31] Manika won historic Bronze medal in Asian Cup 2022 where she took down Top 10 paddlers - Chen Xingtong and Hina Hayata of China and Japan respectively.