Barbara - yes, I do live in Wales.
Around 20% of the population of Wales speak Welsh and the language is strongest in the western counties of Carmarthenshire, Ceredigion, Gwynedd & Anglesey. The Welsh language is difficult to learn and many of the English only speakers resent having it being compulsory in schools until the age of 16 with around 1 hour per week. Some of the English only speakers are keen to learn the Welsh language. Some schools are totally Welsh for all subjects (except English or a European language lessons). Cardiff has 16 high schools and 3 of these are Welsh language schools.
Road signs vary with older ones having English on top but new ones having Welsh first. Announcements in rail stations in Wales are in Welsh first - much to the annoyance of the majority who do not speak Welsh. The Welsh speakers usually vote for the nationalist party called Plaid Cymru who would like to see the break up of the UK and have Wales as a separate state with nothing to do with rule from London. PC come third in the elections and generally win seats in the more sparsely populated aforementioned western counties. Wales has a Welsh Parliament (Senedd) with devolved powers from the London UK government. Many of the people living in Wales today are not pure bred Welsh but have come from other parts of the UK or abroad. The people vary from one part of Wales to another in terms of wealth, rural living, industrial areas, Welsh speaking or not.
Many visitors from other parts of the UK also have difficulty pronouncing the names of places. You could start with the most difficult one of all - which is normally shortened to LlanfairPG - which is a village on Anglesey. See [this Youtube video][1].
More about Wales:> https://www.visitwales.com