I am not a dentist but I am a future implant patient who has done a lot of research on the subject.
There are...
True. Your teeth on both sides of the empty socket have already begun shifting. You risk a "domino effect" of losing more teeth by not filling the empty space of the lost tooth. Your moving teeth will shift your bite thus putting your remaining teeth into unnatural positions of "stressful" contact with each other causing them to crack.
I'm getting 4 implants but first have to get braces to realign my bite because I waited too long.
I don't believe this to be true but will let a dentist (if we have one here) correct me if I'm wrong. Implants can be tricky sometimes requiring bone grafts and sinus lifts. Implants are major oral surgery and the better your surgeon the better your outcome. Like with anything else, you get what you pay for.
If you can't afford the best private care then I suggest a highly ranked dental school. At a world class dental school you can pay extra to have the professors (who are all professional dentists with years of experience) do your work and the students will assist. The great thing about a dental school is you have a team working on your dental issue(s)where there are lots of eyeballs on "the work" which ensures good, unrushed work with less errors. In addition, a dental school basically insures their work and should complications arise they are more likely to fix the problem without pushback and/or charging you more money.
Well for whatever it's worth I have multiple older relatives who have gone to Iraq for a full set of implants at probably 10% of the cost they would be here in the USA, it used to be Turkey but since Iraq has started to come around and them originally being from Iraq they went there. They look great and there weren't any issues, Iraq isn't really known for their medical prowess since they were bombed back into the Middle Ages a few races ago but also your barber used to be your dentist....
Not to minimize any medical procedure but things like this which for all intents and purposes are "cosmetic" experience means more than any shiny degree on the wall.