Might be worth a trip to your nearest good sewing machine shop where you can see what’s available? If you tell us the County you’re in, I’m sure you’ll get some shop recommendations.
Just like buying cars, there’s a huge variety of makes, models and extras to choose from. Plus good quality used models too.
Start by working out what you’re likely to be sewing and set a realistic budget.
Dressmaking, Embroidery, Quilting, Soft Furnishing - curtains, cushion covers etc., bag making and related accessories, soft toys etc….
There isn’t really a One Size Fits All machine. Also, maybe buy with the intention of trading in and upgrading later on if you really get into it?