You can limit your data usage by turning off mobile data. You'll then not be able to access the internet using the mobile network. You can still use Wi-Fi even though mobile data is turned off.
Galaxy A14 Samsung Support UK
Samsung Galaxy A14 6.6 FHD+ 5G Tracfone w/1500 Min/Text/Data/365 Days - 21036578
User manual Samsung Galaxy A34 (English - 158 pages)
Device Help, Samsung Galaxy A14 5G
Samsung Galaxy A14 5G Review
Samsung Galaxy A14 5G receives a price cut in India - Times of India
How to turn on and turn off data roaming on SAMSUNG Galaxy A34 5G?
Galaxy A14 5G 64GB Black
Samsung Galaxy A14 4G user manual (English - 141 pages)
Samsung Galaxy A14 4G user manual (English - 141 pages)
User manual Samsung Galaxy A14 5G (English - 148 pages)