Hi! First you need to decide what you need an anti-detect browser for?
Here are some examples and the best browsers below. Mostly anti-detect browsers are used for:
Affiliate marketing. Anti-detect browser helps to impersonate different users and fight against traffic source restrictions on the number of accounts. For example, the number of accounts created is very closely monitored by Facebook and Google. - Dolphin
SMM and review publishing. You can open the same site in different tabs, but on behalf of different users. This speeds up your work considerably. - Dolphin
Multi-accounting - for those who work with betting and bookmakers.
To bypass anti-fraud systems. By creating unique digital fingerprints you can impersonate a new user each time. - Multilogin and Linksphere
Farm accounts for the same affiliate marketing, publishing reviews, etc. - Adspower
Preserving anonymity online. - Any anti-detect