One way to go about it is to do it DIY. It’s definitely doable, but based on the DIY jobs I’ve seen from customers. I cannot recommend it in good faith.
For one the main issues I see are.
- Bad methods, and not following directions carefully
- Not following best practices to protect the phone
- Low quality parts
As a regular person with little knowledge of phone repair. You’re not going to have the knowledge of what to do or not to do when repairing a phone.
Most guides assume a requisite level of knowledge, that is not always there.
And you certainly won’t know nor have access to good price, but also quality parts. There’s a lot of sellers on eBay of phone parts. SOme of them are good, but a lot are garbage.
How to tell the difference? Unfortunately you probably won’t know until you get it and put it on if you’ve never installed a screen before.
Which is why I would recommend, just letting the experts handle it.