The best antidetect browser ironically enough is no antidetect browser
Use regular browsers you can download for free such as firefox etc. Simply keep 1 account per browser. Antidetect browsers often leak to google & actually look suspicious - as regular users do NOT use these. IP & browser are google misconceptions in my experience. I have over 10+ google ads accounts running on my personal PC & many others across a few VPS (different countries aswell) all is well
save your money & accounts