Would you recommend a water filter or a water purifier for this occasion?

I am going on a backpacking/hiking trip and will be outdoors for about four days, would you recommend a water filter or a water purifier for this occasion? I am looking for the most comfortable and most convenient option for drinking clean water.
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https://www.amazon.co.uk/OASIS-Water-Pu ... B07L8GZ5NK
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Are you likely to be doing something similar in the future? If so then a filter / purification system is potentially worth getting. By this I mean the various devices that clean the water for you.
Irrespective of what you use (if anything) to make the water safe you need to be aware that high level of particulates in the water reduces any purification system. If using tablets it needs longer to work. If using a filtration based system it clogs it up quicker and reduces flow through it. Best filter it. That be part of your filtration system, before the purification / main filtration or before tablets. Pre filter cloudy water with anything you have. Any cloth could be used, fine weave is better. Put it over the bottle your filling is one way.
Personally there's loads of options available. You can even get a sawyer life straw I believe for £18. This is used to drink directly from a water source or you fill a bottle and drink through the straw from that.
My favourite is the sawyer filters put in line with the outlet tube from a water bladder. You get sick 2 connectors and put it between two lengths of tube from the bladder to the filter and filter to the mouthpiece. Worth getting it you're worried.
Water source is important. Fill up from inlet streams to bodies of water not outlet for example. Fast flowing water for at least 10m upstream in upland areas of the UK are generally good sources. It's possible to do without filtering / purifying water in parts of the UK. Not everywhere of course.
I mentioned sources above. This is important. Fast flowing streams in upland areas are likely to be ok if it's flowing for a bit before you collect it. Dead sheep upstream is a common fear. Reality is if you look upstream 10m and see one you'll go upstream of it but even below it you'd likely not get ill. If you can't see any dead sheep there's no problem if you've taken the effort to look at least 10m upstream.
Although strictly true you may be at risk following this advice so it's up to you. I've drunk from streams directly a lot in the lakes and even Scotland and Wales. Never been ill. That includes water from little streams crossing popular footpaths lower down when I was a scout. It wasn't fast flowing and we didn't check upstream.