Opinion: The concept of a gartel is a special garment for tefillah. Shulchan Aruch 98:4 ????? ????? ?? ??????? ???? ??????? ????? ??? ???? ?????
(The “separation” concept is fulfilled with today’s pants.) A gartel belongs and looks nice with a long jacket to help close the jacket – like a typical kittel or long raincoat has. But it makes no sense to wear with a short jacket. It’s not a “nice garment” when worn with a short jacket.
Those that wear the gartel with the short jacket is because they are keeping the mesorah of their parents, etc. But to start it now…?
Here’s some other ideas to improve davening: 1) come on time 2) look in the siddur 3) buy and bring your own siddur 4) have a minyan kavuah 5) buy and bring your own table shtender. 5) sometimes less shuckeling helps!