Speed Up the MacBook Air 2015

My 2015 Macbook air has the base 4gb ram, 256gb SSD, MacOS Monteray, 1.6GHz Dual-Core Intel i5. Even though it is 256 GB, it is always low on space because the System Data is 170GB and the Mac OS is 23.5 GB. The laptop has become immensely slow, with apps often crashing. Other than that, the laptop is in top condition. Istore almost all my data on the cloud.

I've read that bigger drives are faster than smaller drives. If I installed a 1TB SSD, would I see an increase in "speed"/performance?