1.2 Petrol oil pressure low

Hello to the round, the Crossland X of my mother-in-law had now also the well-known problem with low oil pressure. Car was towed to the local Opel dealer. Probably the timing belt has of course dissolved. Now a few questions, to those who had the problem before: 1. How Kulant is Opel with the repair? 2. Will only the timing belt be replaced and the oil sieve cleaned or is also sought for possible damage, which can be caused by lack lubrication and the oil truck icy run cleaned? 3. Is the new belt better then and lasts a little longer or do you simply have to change the thing every three years? Pair of data about the car: 2019 year 110 hp 1.2 petrol automatic gapless with Opel stitch stitched approx.60 tkm Luckily he still has up to 2026 used car warranty but there is a little self-retention (therefore the question of culantry). Greetings and thanks Michael