How To Use These Phrases In Your English
'In my opinion' is the classic expression - but it's not the only one. Use moderately.
'To my mind' is a common spoken form - and you can use it in writing, too.
'If you ask me' is very, very common in spoken English, and can come first or last in a sentence.
'To my way of thinking' is often used with emphasis on 'my' to give a strong opinion.
'In my view' is common in spoken and written English.
The abbreviated question '(Do you) know what I think?' is very popular and is not rude.
The conditional structure I'd say is rarely taught as a conditional, but this is one of the most common ways of giving an opinion in English.
'For me' is like 2 and 5.
10 is similar to 6, and is quite direct.