bad mobility in my 30s and thinking of starting home pilates to fix it

i have been dealing with tight hips and stiff shoulders for years from sitting at a desk all day and it is starting to affect how i move in daily life. simple things like reaching overhead or bending down feel restricted and i want to improve my range of motion before it gets worse.

i am thinking of trying pilates at home and came across home pilates reformers as a good option for consistent practice. what experiences have you had with reformer pilates for mobility? which exercises helped the most with hips and shoulders? any tips for beginners starting at home?