The main issue we have had in the UK is a lack of respect and privacy from certain landlords.
When you rent your house, it stops being "your house" for the duration of the tenancy.
This is understood in Europe, and people leave you alone.
But in the UK, the cult of property is like a disease. Landlords harrass you, they don't respect your privacy, they barge in without asking for permission etc..
And we have rented expensive properties (£2,000 - £3,000 pcm range)
And tenants largely put up with this because they tend to have feweer resources and protections.
This happened to us in our first place in London and we hired a solicitor to deal directly with the landlord.
He backed off very fast.
Now that we have been in the country longer, I understand full well that its the asymmetry of power in the landlord-tenant legal relationship that creates so many problems. It also atracts terrible, unscrupulous people into the landlord business because they enjoy that dynamic.
Nothing gets a landlord more scared than a tenant with the resources to hire an entire army of solicitors if they behave badly.
Until the market is regulated properly, and tenants have real protections, the dysfunction will absolutely continue.