@Dave7 you haven't said what you use a PC/laptop so I'm going to take guess that your similar to me. My laptop is used for:
The above means I use it every day, perhaps just for a few minutes to update a finance spreadsheet or send an important email. All of this is very simple stuff and doesn't require a great deal of computing power. My machine, a Microsoft Surface Pro, is eight years old running Windows 10, handles all this very well. I use a laptop for these things because I want speed and accuracy which I can't achieve with a tablet or phone. As an example if I want to work on a spreadsheet, yes I can use my phone or tablet, but compared to using a laptop and key board these are slow and cumbersome.....for me. Important online shopping? If I'm researching cycle kit for example. Concert tickets? Well I'll be chasing Springsteen tickets on Thursday and Friday - there's no way I'd risk doing this on the small screen of my phone.
- Web surfing especially when it's something important to me
- Shopping when it's something important or I need to research before buying
- Ticket purchase for theatre, concerts, gigs etc.
- "Work" - I'm treasurer to a local charity and need access to Excel and Word
- Football - 3-4 times a season I might need it to watch the Rovers live
- Films - from time to time to watch Netflix or similar
Plenty will disagree with me and offer reasons why a tablet or phone can do these things. I think it all boils down to ease of use, confidence in the outcome and what suits the individual.
I have a tablet, rarely used, and a Samsung phone which I use a great deal for messaging, browsing and reading etc. Stuff I want to do quickly and easily, in a comfy chair without firing up a laptop.
In your shoes, presuming my guess above is accurate, I would buy a good value laptop from Currys or similar. They will be able to offer you a data transfer service to move everything on your existing machine to the new one. You will then be "up and running" for everything you currently do and may need to in the future.
I knew this would be a longish post, my one fingered typing on the phone would have taken ages.........so I fired up the laptop........
Pretty much the same apart from.....
Work/spreadsheets. Not since retired.
Films/sport. Only on TV.