@Celia  my machine is an Alfa Next 30, I bought it about eight years ago from my local Franklins to replace my ancient Merritt which gave up the ghost after 35 years, the last 20 of those in the cupboard.
It was not expensive but it had sewn anything from chiffon to denim with no problems. I an very fond if it but have been thinking about buying a more expensive machine but with the lockdowns last year and my dodgy hips I haven't done anything about it except lots of research and ogling of some of the fancy models. I'll phone Franklins tomorrow and order a new one because I don't think it can be repaired.
I used it this morning to sew the waist facing on so next I am going to give the trousers a press. When the hems are done I'll get some photos taken of me wearing them but because my posture is so one sided they might not look great.

Tried them on this morning, good fit in the derrière, thank goodness and I need to take the waist in an inch or so, I'll do that from the centre front as well as the side seams.

What a beautiful space.

It is a lovely dress and pretty fabric, well done for persevering with it.

Darts and front and back seams sewn, waist facing finished off, now ready for zip and side pockets to be done. A bit more concentration needed for those jobs. Getting there slowly.

That looks very complicated, well done.

Well done, they look great.

Hello and welcome @Andymat ,well done with the t-shirts and for getting the most out of your fabric.