These are ways to enjoyable pass the time of isolation that folks might find they like:
The Open University does free online courses, covering a wealth of subjects including maths and arts subjects, social care and health, and the lessons are well written and nicely paced.
Learn some new words in a different language (or even to learn it fluently eventually!) through Duolingo
Take a virtual tour of museums and art galleries through such sites as the British Museum
If you've never played computer games, Steam has a wealth of ones to choose from. 'Hexcells' is a gentle puzzle game, 'Final Fantasy' is a game where you play as a character, cast spells, make weapons and possibly make friends too!
If you do start playing games (or already do of course!), a great way to start chatting with people from around the world and the UK is 'Twitch' - 'Mixer' is a similar one. Some good, friendly communities are Eternal card game, and again, Final Fantasy.
Listen to podcasts while doing crafts or colouring in adult colouring books - the BBC has a large number to choose from, but there are other sources too, such as iTunes.
Hope these help!