Governments will change, people on the top might change. The question is whether they will face any consequences for their actions. Will the US as a whole face any consequence of its actions. Like the consequences other countries face when they do the stuff America is doing right now.
Or will it be back to normal as soon as the regime changes.
Will there be any lasting effects in how the world deals with US?
No empire lasts forever and I think the US’ is already in decline. A large part of America’s global power is its network of allies and Trump is doing massive damage to those relations. Places like Europe are pushing for more independence and self-sufficiency. The Gulf states are being bombed thanks to America starting a war - no doubt they’ll rethink their relations somewhat after that. At the same time, China’s power and network of allies is steadily growing, without them starting wars left and right. So even if the US elects a sane president again, I think the damage will have been done. They will never be as trusted by their allies as they had been in the post-WW2 world order and they will steadily lose their global influence.