Dose clipping your tongue improve speech?

i been struggling with bad speech for years it has improved a bit over the years but not much my friends and family say they can understand me just fine and i all ways thought i sound okay but when ever i talk to a stranger(like some one at the store) i have to repeat my self or try to say it another way so they can understand so after so many years of that its affected my self esteem every one tells me to just do tongue twisters but it don't help and my 5 year old niece has some speech problems to so my moms friend told her her daughter had the same problem and went into the doctors to have it check and they clipped her tongue and after a few weeks her speech improved after i heard about it i look it up but all i found about it was some newborns get there's clip cause it causes problems for the baby's when they need to nurse but i read into it deeper and find out what it is some people frenulum (the thing under the tongue) can be to close to the front and can restrict the tongue and a way to tell if its the case with you is to stick your tongue out straight and if the tip points down instead of straight its cause the frenulum is getting in the way im hesitating on making a doctors appointment for 3 reasons 1: i don't know how bad its going to hurt (cause they don't numb you) 2: i don't really know if it can improve speech and 3: my teeth have all ways been a little bent and i hear that can mess up your speech so im going in soon to get my teeth fix so i don't know if i should wait to see if my speech improves after i get my teeth fix or if i should go ahead and see if i can get it clipped i want to do something cause like i said its really hit my self esteem so has any one else had this problem and if so dose clipping the tongue or to be more clear the frenulum really help with speech?