Witr mistake & salam doubt — Is prayer valid?

Salam, I was praying witr when I went down for ruku and realised I didn’t say my qunoot so quickly stood up (bare in mind nothing was said in ruku) and then read my salah as normal (qunoot was read) and at the end I did sujood as sahw - is the witr valid as I was already in the position of ruku when I realised and I saw somewhere that you should continue if you’ve moved onto the next part which I didn’t do. But even if I was supposed to move on, does the sujood cover all the mistakes I’ve made? What if I made a small slip whilst saying Salam right at the end does that mistake get covered by the sujood. Also, I have waswas, and every time I read witr I always doubt if I said Salam to my left - I even record myself praying but the video always cut short due to storage issues and I never see the ending which makes the doubt worse - I try to avoid repeating prayers where I can and I tell myself I pray all the time and muscle memory would make me say Salam right to left - is this correct? How to cover some this doubt that always comes when I’m saying my salams. Because even right now the doubt is lingering and giving me anxiety that I need to redo my prayer because I didn’t say Salam.