How to import data if PhPPgAdmin hangs and gives errors when importing into the database "The connection was reset."?

Question

PostgreSQL

I have 20,000+ such requests in .txt file

INSERT INTO public.steam_apps (steam_appid, app_type, price, name, header_image, os, slider_image, cover_image, required_age, detailed_description, pc_requirements, mac_requirements, linux_requirements, developers, publishers, supported_languages, website, genres, categories, metacritic, recommendations, screenshots, achievements, release_date, background_url, created_at, updated_at, full_game) VALUES (46500, 'game', 1299, 'Syberia', 'http://cdn.akamai.steamstatic.com/steam/apps/46500/header.jpg?t=1478599954', '{"windows":true,"mac":true,"linux":false}', ....
'http://cdn.akamai.steamstatic.com/steam/apps/46500/page_bg_generated_v6b.jpg?t=1478599954', '2017-09-22 04:11:28', '2017-09-22 04:11:28', null);

When trying to import the file itself into a table, it first shows Uploading (1% -99%) in the lower left corner, and then PhPPgadmin breaks down without importing anything. Giving an error
The connection was reset.
When trying to execute all requests from a file, it says that the request is too long, or gives a black page, hangs.
So how do you import all records then?